The Digital Advertising Dictionary

A

A/B Testing

A method of comparing two versions of an ad, landing page, or campaign element to determine which performs better. You split traffic between variant A and variant B, then measure which one drives more conversions or clicks. Statistically significant results typically require 100+ conversions per variant. Google Ads has a built-in Experiments feature for running A/B tests on campaigns without disrupting your main account.

Related: Conversion Rate, Ad Copy, Landing Page, Experiments

Ad Copy

The text content of an advertisement, including headlines, descriptions, and calls-to-action. Strong ad copy speaks directly to the searcher's intent and differentiates your offer from competitors. In Google Ads, responsive search ads let you test up to 15 headlines and 4 descriptions. The best-performing ad copy focuses on benefits and specifics ("Save 40% this week") rather than generic claims ("Great prices").

Related: Headline, Responsive Search Ad, Click-Through Rate, Quality Score

Ad Extensions

Additional pieces of information that expand your ad with extra links, phone numbers, locations, or callouts. Google renamed these to "assets" in 2022 but the industry still commonly uses "extensions." They increase your ad's visual footprint on the results page and provide more reasons to click. Google factors extension quality into Ad Rank, so adding relevant extensions can improve your position without raising your bid.

Related: Sitelink, Call Extension, Ad Rank, Quality Score

Ad Fraud

Any deliberate activity that generates fake ad interactions to steal advertising budget. Click fraud (bots or competitors clicking your ads), impression fraud (ads loaded in invisible frames), and conversion fraud (fake form submissions) are the most common types. Google's invalid click detection catches a portion, but dedicated third-party tools like ClickCease or Lunio provide additional layers of protection for high-spend accounts.

Related: Click Fraud, Impression, CPC

Ad Group

A container within a campaign that holds a set of related keywords and ads. Each ad group should focus on a tight theme so that ads closely match the keywords they target. When an ad group covers too many unrelated keywords, Quality Score drops because the ad text cannot be relevant to every search. Most well-structured accounts use 5-20 keywords per ad group.

Related: Keyword, Ad Copy, Campaign, Quality Score

Ad Rank

The score Google uses to determine your ad's position on the search results page. Ad Rank is calculated from your bid amount, Quality Score, and the expected impact of ad extensions and formats. A higher Ad Rank means a better position. You only pay the minimum amount needed to maintain your position above the next advertiser - not your maximum bid.

Related: Quality Score, CPC, Ad Extensions, Auction

Ad Schedule

Settings that control which days and hours your ads are eligible to appear. Also called dayparting. If your business only operates Monday through Friday, you can pause ads on weekends to conserve budget. More sophisticated scheduling uses bid adjustments - bidding higher during your peak conversion hours and lower during off-hours rather than turning ads off entirely.

Audience

A defined group of users you want to target with your ads, based on demographics, interests, behaviors, or past interactions with your business. Google Ads offers in-market audiences (people actively researching products), affinity audiences (people with long-term interests), custom audiences (based on keywords and URLs), and your own data audiences (website visitors, customer lists). Layering audiences onto search campaigns lets you bid more aggressively for high-value users.

Related: In-Market Audience, Lookalike Audience, Remarketing, Retargeting

Auction

The real-time bidding process that occurs every time someone searches on Google. Advertisers whose keywords match the search query enter the auction, and Google evaluates each entry's Ad Rank to determine positioning and pricing. Auctions complete in milliseconds and run billions of times per day. You never compete in the same auction twice because user context (device, location, time) changes the competitive set each time.

Related: Ad Rank, Quality Score, CPC, Bid Strategy

Attribution Window

The time period after an ad interaction during which a conversion is credited to that ad. Google Ads defaults to 30 days for click-through and 1 day for view-through. Longer windows capture more conversions but make it harder to evaluate recent campaign changes. Align your attribution window with your typical sales cycle - a SaaS product with a 60-day evaluation period needs a longer window than a retail impulse buy.

Average CPC

The mean price you pay per click across all your ad interactions. Calculated by dividing total cost by total clicks. Average CPC varies dramatically by industry - legal keywords can exceed $50 per click while e-commerce fashion keywords might average $0.50. Tracking average CPC over time reveals whether competition is increasing (rising CPC) or your Quality Score is improving (falling CPC with stable positions).

Related: CPC, Quality Score, Bid Strategy

B

Bid Strategy

The approach you use to set bids in your ad campaigns. Manual CPC gives you direct control over each keyword's bid. Automated strategies (Maximize Clicks, Maximize Conversions, Target CPA, Target ROAS) let Google's AI adjust bids in real-time based on contextual signals. Most advertisers transition from manual to automated bidding once they accumulate enough conversion data - typically 15-30 conversions per month - for the algorithm to optimize effectively.

Related: Smart Bidding, Manual Bidding, Target CPA, Target ROAS

Brand Bidding

The practice of buying ads on your own brand name as a keyword. Brand CPCs are typically very low ($0.50-$2) because you have inherent relevance, but the strategy is controversial because you may already rank #1 organically. The strongest case for brand bidding is when competitors actively bid on your name and could siphon off customers who are searching specifically for you.

Kirk Williams clarified the nuance in the brand bidding debate when Basecamp's Jason Fried criticized Google:

Broad Match

The widest keyword match type in Google Ads. A broad match keyword triggers your ad for searches related to your keyword, including synonyms, related topics, and implied intent. In 2026, broad match is far more sophisticated than it was years ago - Google's AI understands intent and context rather than just matching individual words. Paired with Smart Bidding, broad match gives the algorithm maximum flexibility to find converting searches you would not have thought to target manually.

Related: Phrase Match, Exact Match, Keyword Match Type, Negative Keyword

Budget

The amount of money allocated to an advertising campaign, typically set as a daily or monthly figure. Google Ads sets budgets at the campaign level and can overspend your daily budget by up to 2x on high-traffic days, but balances it over the month. Start with enough budget to generate meaningful data (at least 10-15 clicks per day per campaign) and scale based on performance. Underfunded campaigns produce unreliable data and waste money on the learning phase.

Buyer Intent

The likelihood that a searcher is ready to make a purchase based on the words they use. Keywords like "buy running shoes size 10" signal high intent, while "are running shoes good for flat feet" signals research intent. High-intent keywords cost more per click but convert at much higher rates. Structuring campaigns by intent level lets you set different bids and write different ad copy for each stage of the buying process.

C

CAC (Customer Acquisition Cost)

Total marketing and sales spend divided by the number of new customers acquired. CAC is the single most important metric for evaluating advertising efficiency across channels. A healthy business maintains a lifetime value (LTV) to CAC ratio of at least 3:1. Track CAC by channel and campaign to understand which sources deliver customers most efficiently. Rising CAC is one of the earliest warning signs that a channel is saturating.

Related: LTV, CPA, ROI, ROAS

Larry Kim captured the fundamental challenge of customer acquisition costs in direct-to-consumer brands:

Call Extension

An ad extension that displays a phone number alongside your ad, allowing mobile users to call your business directly from the search results. Call extensions work particularly well for local businesses, service providers, and any industry where phone calls are a primary conversion action. Google tracks call duration and can report calls as conversions if they exceed a threshold you set (commonly 60 seconds).

Campaign

The top-level organizational unit in Google Ads that controls budget, geographic targeting, and network settings. Each campaign contains ad groups, which contain keywords and ads. Campaigns should be structured around distinct business objectives, product lines, or geographic regions. Mixing unrelated goals in a single campaign makes budget allocation and performance analysis much harder.

Related: Ad Group, Budget, Bid Strategy

Click

A single instance of a user clicking on your ad. In PPC advertising, each click costs you money (your actual CPC). Not all clicks are equal - a click from a high-intent search query is worth far more than a click from a broad informational query. Google filters out invalid clicks (accidental double-clicks, bot traffic) and does not charge for them.

Related: Click-Through Rate, CPC, Impression

Click Fraud

Fraudulent clicks on PPC ads intended to drain an advertiser's budget without genuine interest. Sources include competitors clicking your ads, bot networks, and click farms. Google's automated systems detect and filter much of this, but sophisticated fraud can slip through. If you notice unusually high click volumes with near-zero conversions from specific geographies or IP ranges, investigate and consider third-party click fraud protection software.

Related: Ad Fraud, CPC, Impression

Click-Through Rate (CTR)

The percentage of people who click your ad after seeing it, calculated as clicks divided by impressions. CTR is a key component of Quality Score - a higher CTR tells Google that your ad is relevant to searchers. Average CTR varies by industry and ad type, but 3-5% is typical for search ads and 0.5-1% for display. Improving CTR through better ad copy and extensions is one of the most direct ways to lower your cost per click.

Related: Impression, Click, Quality Score, Ad Copy

Connected TV (CTV)

Television content streamed through internet-connected devices like Roku, Fire TV, Apple TV, or smart TVs with built-in apps. CTV advertising combines the visual impact of traditional TV with digital targeting and measurement. You can serve video ads to specific audiences based on demographics, interests, and even retarget website visitors. CTV ad spend is the fastest-growing digital channel as cord-cutting accelerates.

Conversion

A desired action completed by a user after clicking your ad - a purchase, form submission, phone call, or signup. Conversions are the ultimate measure of advertising success because they tie ad spend to business outcomes. Accurate conversion tracking is non-negotiable; without it, optimization algorithms have no signal to learn from, and you cannot calculate ROAS or CPA. Set up conversion tracking before spending your first dollar on ads.

Related: Conversion Rate, CPA, Landing Page

Conversion Rate

The percentage of clicks that result in a conversion. Calculated as conversions divided by clicks. A campaign with 100 clicks and 5 conversions has a 5% conversion rate. Average rates vary by industry (e-commerce: 2-4%, B2B lead gen: 3-6%, SaaS: 5-10%). Improving conversion rate through landing page optimization is often more cost-effective than increasing ad spend to get more clicks.

Related: Conversion, CPA, Landing Page, A/B Testing

CPA (Cost Per Acquisition)

The average cost of acquiring one conversion, calculated as total ad spend divided by total conversions. CPA is the primary efficiency metric for lead generation campaigns. Your target CPA should be derived from the value of each conversion to your business. If a customer is worth $500 in lifetime value, a $50 CPA is highly profitable. Google's Target CPA bidding strategy automatically adjusts bids to hit your desired acquisition cost.

Related: CPC, CPM, Conversion Rate, Target CPA

CPC (Cost Per Click)

The price you pay each time someone clicks on your ad. In the Google Ads auction, you pay the minimum CPC needed to maintain your Ad Rank above the next competitor - not your maximum bid. Average CPC varies enormously by industry: insurance and legal keywords can exceed $50 per click, while retail and travel keywords might average $1-3. CPC is also valuable in SEO context for estimating the value of organic traffic.

Related: Pay-Per-Click, CPM, CPA, Quality Score

CPL (Cost Per Lead)

The cost of acquiring a single lead (a person who expresses interest, typically via form submission or phone call). CPL is the B2B equivalent of CPA for e-commerce. Benchmark CPLs vary by industry: technology ($50-150), financial services ($50-200), healthcare ($30-100). Track CPL alongside lead quality metrics to ensure you are not just generating cheap leads that never convert to customers.

CPM (Cost Per Mille)

The cost per 1,000 ad impressions. CPM is the standard pricing model for display, video, and awareness campaigns. A $10 CPM means you pay $10 for every 1,000 times your ad is shown. CPM campaigns optimize for visibility rather than direct response. Compare CPM across channels to find the most efficient reach: YouTube might cost $15 CPM while a niche publisher charges $5 for a more targeted audience.

Related: CPC, Impression, Display Ads

Creative

The visual and textual elements of an advertisement - images, video, headlines, descriptions, and calls-to-action. In social advertising, creative quality is the single biggest driver of performance because users are not actively searching and your ad must interrupt their feed. Refresh creative every 2-4 weeks to combat fatigue. Test different value propositions, not just different visuals of the same message.

Cross-Network

A reporting label in Google Ads that appears when a conversion involved interactions across multiple Google properties (Search, Display, YouTube, etc.). Cross-network attribution became more common with Performance Max campaigns, which run ads across all Google surfaces simultaneously. It indicates that the customer journey spanned multiple touchpoints before converting.

D

Demand-Side Platform (DSP)

Software that allows advertisers to buy digital ad inventory programmatically across multiple publishers from a single interface. Major DSPs include Google DV360, The Trade Desk, Amazon DSP, and MediaMath. The DSP evaluates available impressions in real-time, applies your targeting criteria, and bids on those that match. DSPs provide access to inventory across the open web, connected TV, audio, and digital out-of-home.

Device Targeting

The ability to adjust bids or restrict ads based on the user's device type (desktop, mobile, tablet). Conversion rates often differ significantly by device - B2B products may convert better on desktop while local services convert better on mobile. Use device bid adjustments to allocate more budget to devices that deliver better returns. Some advertisers create separate campaigns per device for maximum control.

Display Ads

Visual advertisements (banners, images, rich media) that appear on websites across ad networks. Google's Display Network reaches over 90% of internet users worldwide. Display ads are primarily used for awareness and retargeting rather than direct response. They generate lower click-through rates than search ads (0.5-1% vs. 3-5%) but serve a different purpose in the marketing funnel.

Related: Display Network, CPM, Remarketing, Programmatic

Display Network

A collection of websites, apps, and video platforms where display ads can appear. Google's Display Network includes over 2 million sites and reaches more than 90% of internet users. Advertisers can target specific websites (managed placements), categories of sites (topics), or types of users (audiences). Display Network performance varies wildly by placement, making regular exclusion of low-performing sites a necessary maintenance task.

Related: Display Ads, Placement, Google Ads

Dynamic Search Ads

A Google Ads feature that automatically generates ad headlines based on your website content and matches them to relevant searches. Instead of creating keyword lists, you point Google at your site (or specific pages) and it figures out which searches to target. Dynamic Search Ads work well for large sites with many products or services where manually creating keywords for every page is impractical. They also catch long-tail queries you would never think to bid on.

Related: Search Ads, Keyword, Landing Page

E

eCPA (Effective Cost Per Acquisition)

The actual cost per conversion when running on a CPM or CPC model, calculated as total spend divided by total conversions. Comparing eCPA across campaigns with different billing models (CPC vs CPM) lets you make apples-to-apples performance comparisons. A display campaign billed at $5 CPM that drives 200 conversions from 100,000 impressions has an eCPA of $2.50 - which you can directly compare against a search campaign's CPA.

Related: CPA, CPM, CPC, Conversion Rate

eCPM (Effective Cost Per Mille)

The effective cost per 1,000 impressions regardless of how the campaign is billed. For a CPC campaign, eCPM = (total spend / total impressions) x 1,000. This metric is the universal currency for comparing ad costs across billing models - a CPC search campaign and a CPM display campaign can both be evaluated on eCPM. Publishers use eCPM to compare revenue from different ad networks and formats.

Related: CPM, CPC, Impression, ROAS

Enhanced CPC

A semi-automated bidding strategy that adjusts your manual bids up or down based on the likelihood of a conversion. When Google detects a high-converting opportunity (right device, location, time), it raises your bid; for low-converting scenarios, it lowers it. Enhanced CPC is a middle ground between fully manual bidding and full automation. Google removed the cap that limited bid increases to 30%, so Enhanced CPC can now raise bids significantly.

Related: Smart Bidding, Manual Bidding, CPC

Exact Match

The most restrictive keyword match type, denoted by square brackets: [running shoes]. Exact match triggers your ad only for searches that have the same meaning as your keyword. In 2026, "same meaning" is interpreted broadly - Google includes close variants, synonyms, and implied intent. An exact match keyword [running shoes] can trigger for "shoes for running" or "jogging footwear." Exact match gives you the most control but the narrowest reach.

Related: Broad Match, Phrase Match, Keyword Match Type

Experiments

A Google Ads feature for running controlled A/B tests on campaign changes. You create an experiment that mirrors your original campaign, apply one change (different bid strategy, new ad copy, modified targeting), and split traffic between the original and experiment. Experiments provide statistical confidence about whether changes improve performance before you commit to them across your full account.

F

Facebook Pixel

A JavaScript snippet installed on your website that sends visitor behavior data back to Meta (Facebook). The pixel tracks page views, add-to-cart actions, purchases, and custom events. This data powers conversion reporting, audience building for retargeting, and lookalike audience creation. Without the pixel, Meta's algorithm cannot optimize ad delivery toward users who are most likely to convert. iOS 14.5 privacy changes reduced pixel effectiveness, making server-side tracking (Conversions API) increasingly important.

Related: Retargeting, Conversion, Lookalike Audience

Feed (Product)

A structured data file containing your product catalog information - titles, descriptions, prices, images, availability, GTINs, and categories. Google Merchant Center and Meta Commerce Manager both require product feeds to power shopping ads. Feed quality directly impacts ad performance: optimized titles with relevant search terms, high-resolution images, and accurate pricing are the biggest drivers of shopping ad success.

First-Party Data

Data collected directly from your own customers and website visitors - email addresses, purchase history, on-site behavior, and CRM records. As third-party cookies phase out, first-party data is becoming the most valuable targeting asset in digital advertising. Upload customer lists to Google Ads and Meta for Customer Match targeting and lookalike audience creation. Businesses that invest in growing their first-party data have a structural advantage in the privacy-first advertising landscape.

Frequency

The average number of times a unique user sees your ad during a campaign. In display and social advertising, frequency is a critical metric to monitor. Too low (under 2) and your message does not register; too high (over 7-10) and you waste budget on users who are not going to convert. Rising frequency correlates with creative fatigue, declining CTR, and increasing cost per conversion.

Frequency Capping

A setting that limits how many times an individual user sees your ad within a specified time period. Frequency caps prevent overexposure and wasted spend. Common caps range from 3-5 impressions per user per day for display campaigns and 2-3 per week for video. Google's Display campaigns allow frequency capping at the campaign level, while YouTube campaigns offer it at the campaign and ad group level.

G

Geo-Targeting

The practice of showing ads only to users in specific geographic locations - countries, states, cities, zip codes, or a radius around a point. Geo-targeting prevents wasting budget on clicks from areas you do not serve. Advanced uses include bid adjustments by location (bid higher in high-converting cities) and separate campaigns for different markets with distinct messaging and budgets.

Google Ads

The world's largest digital advertising platform, formerly known as Google AdWords. Google Ads serves ads across Search, Display, YouTube, Gmail, Maps, and partner sites. Advertisers bid on keywords, target audiences, and pay per click (CPC) or per thousand impressions (CPM). The platform processes billions of auctions daily and represents roughly 28% of all digital ad spending globally. MeasureBoard's Competitor Ads feature tracks competitors' activity across Google Ads.

Related: Google Shopping, Performance Max, Quality Score, Smart Bidding

Google Merchant Center

The platform where retailers upload and manage their product data for Google Shopping ads and free product listings. Merchant Center validates your feed against Google's requirements, flags disapproved products, and connects to Google Ads to power Shopping campaigns. Keeping your Merchant Center account healthy - no pricing mismatches, accurate shipping info, up-to-date availability - is required for Shopping ad eligibility.

Google Shopping

Product listing ads that appear with images, prices, and merchant names in Google search results and the Shopping tab. Unlike search ads, Shopping ads are driven by your product feed data rather than keyword bids. Google matches your products to relevant searches based on titles, descriptions, and categories in your feed. Shopping ads typically deliver higher ROAS than text ads for e-commerce because users see the product and price before clicking.

Related: Google Merchant Center, Shopping Ads, Product Feed

H

Headline

The bold, clickable text at the top of a search ad. Google Ads responsive search ads allow up to 15 headlines (30 characters each), and the platform tests different combinations. Your headline is the first thing a searcher reads, making it the highest-impact element of your ad. Include your target keyword in at least one headline, lead with your strongest benefit, and use numbers when possible ("50% Off" outperforms "Big Savings").

I

Impression

A single instance of your ad being displayed to a user. Impressions tell you how visible your ads are but say nothing about engagement. Search ad impressions indicate your ad appeared on the results page; display impressions mean it loaded on a webpage (though the user may not have scrolled to see it). Viewable impressions - where at least 50% of the ad was in the viewport for 1 second - are a more meaningful measure for display campaigns.

Related: Impression Share, CPM, Click-Through Rate

Impression Share

The percentage of total eligible impressions your ads actually received. An impression share of 70% means your ads appeared for 70% of the searches matching your keywords. The remaining 30% was lost to either budget constraints (you ran out of money) or rank issues (your Ad Rank was not high enough). Monitoring impression share lost to budget versus lost to rank tells you whether to increase spend or improve Quality Score.

Related: Impression, Ad Rank, Budget

Incrementality

The degree to which advertising causes additional conversions beyond what would have happened organically. A geo-lift test (running ads in some regions and pausing in matched control regions) is the gold standard for measuring incrementality. Brand search campaigns often show low incrementality because users were already searching for your brand. Understanding incrementality helps you allocate budget to channels that genuinely grow the business rather than just taking credit for organic demand.

In-Market Audience

A Google-defined audience segment of users who are actively researching or comparing products in a specific category. Google identifies in-market behavior by analyzing search queries, browsing patterns, and YouTube activity. Targeting in-market audiences lets you reach users who are close to a purchase decision, even if they are not searching for your specific keywords. In-market audiences are available as targeting or observation layers in Search, Display, and YouTube campaigns.

J

JSON Feed

A product feed format using JSON (JavaScript Object Notation) instead of XML or CSV. Google Merchant Center accepts JSON feeds alongside traditional formats. JSON feeds are easier to generate programmatically from modern e-commerce platforms and APIs. The format uses key-value pairs to describe each product's attributes - title, price, image URL, availability, and identifiers.

K

Keyword

A word or phrase that an advertiser bids on to trigger their ads when someone searches for that term. Keywords are the foundation of search advertising. Choosing the right keywords means understanding what your potential customers search for and matching those queries with relevant ads and landing pages. Keyword research tools, search term reports, and competitor analysis all inform keyword selection.

Related: Keyword Match Type, Keyword Planner, Negative Keyword, Quality Score

Keyword Match Type

The setting that determines how closely a user's search must match your keyword to trigger your ad. The three match types - broad, phrase, and exact - range from widest to narrowest reach. Broad match captures the most searches but requires strong negative keyword management. Exact match gives the most control but may miss valuable long-tail queries. Most accounts use a mix of match types tailored to their budget and conversion data maturity.

Related: Broad Match, Phrase Match, Exact Match

Keyword Planner

A free tool within Google Ads that provides keyword ideas, search volume estimates, and cost-per-click forecasts. Keyword Planner shows how often keywords are searched and how competitive they are. Enter a seed keyword, URL, or product category, and it returns related keywords with volume and CPC ranges. The data is most accurate for active advertisers - accounts without spending history see broader volume ranges.

L

Landing Page

The webpage a user arrives at after clicking your ad. Landing page experience is one of three components of Quality Score. A good landing page matches the ad's promise, loads quickly, works well on mobile, and makes the conversion action obvious. Sending ad traffic to your homepage is almost always worse than directing it to a purpose-built page that addresses the specific intent behind the search.

Related: Conversion Rate, Quality Score, Ad Copy

Lead

A potential customer who has expressed interest in your product or service, typically by submitting a form, calling, or starting a chat. In advertising, lead generation campaigns optimize for lead volume and quality rather than direct sales. Not all leads are equal - track lead-to-customer conversion rates by source and campaign to understand which ads generate leads that actually close.

Lifetime Value (LTV)

The total revenue a customer generates over their entire relationship with your business. LTV is the most important number for setting advertising budgets because it determines how much you can afford to spend to acquire a customer (CAC). A customer worth $1,000 in LTV can justify a much higher acquisition cost than one worth $50. Subscription businesses calculate LTV as average revenue per month multiplied by average customer lifespan in months.

Related: CAC, ROAS, ROI

Lookalike Audience

An audience targeting option that finds new users who resemble your existing customers. You provide a source audience (customer list, website converters, email subscribers), and the ad platform identifies users in the broader population with similar characteristics. Start with a 1% lookalike (most similar) and expand to 3-5% as you need more scale. Lookalikes consistently outperform interest-based targeting because they are modeled on real customer behavior.

Related: Audience, Retargeting, Facebook Pixel

Loss Leader

A product advertised at or below cost to attract customers who will then purchase higher-margin items. In PPC, loss leader strategies are common for e-commerce brands that run Shopping ads on competitively priced products to drive traffic, counting on average order value and repeat purchases to generate profit. The approach requires careful tracking of customer LTV to ensure the loss on the initial sale is recovered.

M

Manual Bidding

A bidding approach where the advertiser sets maximum CPC bids for each keyword or ad group directly. Manual bidding gives you complete control but requires constant monitoring and adjustment. It works best for small accounts, new campaigns where you are learning CPCs, or situations where automated bidding lacks sufficient conversion data. Most accounts eventually transition to automated bidding as they accumulate enough data.

Related: Smart Bidding, Bid Strategy, Enhanced CPC

Match Type

See Keyword Match Type.

Maximize Conversions

A Smart Bidding strategy that automatically sets bids to get the most conversions within your budget. Google's algorithm considers device, location, time, audience, and hundreds of other signals for each auction. Maximize Conversions spends your full daily budget, so pair it with a budget you are comfortable fully deploying. Once you have stable performance, adding a target CPA constraint gives you volume optimization with cost guardrails.

Related: Smart Bidding, Target CPA, Bid Strategy

Media Mix

The combination of advertising channels (search, social, display, video, TV, radio, etc.) used in a marketing strategy. An effective media mix balances lower-funnel channels (search, retargeting) that capture existing demand with upper-funnel channels (display, video, CTV) that generate new demand. Marketing mix modeling helps quantify each channel's contribution and guide budget reallocation.

Merchant Center

See Google Merchant Center.

MRR

Monthly Recurring Revenue - the predictable revenue a subscription business earns each month. In advertising context, MRR helps determine how much to spend on customer acquisition. If a customer pays $100/month and stays for 12 months on average ($1,200 LTV), a $300 CAC might be justifiable. Tracking MRR by acquisition channel reveals which advertising sources bring in the highest-value subscribers.

N

Negative Keyword

A keyword that prevents your ad from showing for specific search terms. Adding "free" as a negative keyword stops your ads from appearing when someone searches "free running shoes." Negative keywords are one of the most powerful tools for reducing wasted spend. Review your Search Terms Report weekly and add irrelevant queries as negatives. Shared negative keyword lists at the account level save time when the same exclusions apply across multiple campaigns.

Related: Keyword Match Type, Broad Match, Search Terms Report

Native Advertising

Paid content that matches the form and function of the platform where it appears. Native ads blend into the surrounding content - a sponsored article on a news site, a promoted post in a social feed, or a recommended content widget at the bottom of an article. Native ads typically generate higher engagement than display banners because they feel less interruptive. Taboola and Outbrain are the largest native advertising platforms for content discovery.

O

Optimization Score

A Google Ads metric (0-100%) that estimates how well your account is set up to perform. Google generates specific recommendations (add keywords, adjust bids, enable auto-apply) and weights them by estimated impact. The score is a useful starting point for identifying improvements, but not all recommendations align with your business goals. Evaluate each suggestion on its merits rather than blindly applying everything to chase a higher score.

P

Pay-Per-Click

An advertising model where you pay each time someone clicks on your ad. Google Ads, Bing Ads, and most search advertising platforms use the PPC model. The amount you pay per click (CPC) is determined by an auction system that considers your bid, Quality Score, and competitive pressure. PPC is distinct from CPM (cost per impression) models used in display and awareness campaigns.

Performance Max

Google's AI-driven campaign type that serves ads across all Google properties - Search, Display, YouTube, Gmail, Maps, and Discover - from a single campaign. You provide creative assets (text, images, video) and conversion goals, and Google handles targeting, bidding, and placement. Performance Max is highly automated, which means less manual control but access to all of Google's inventory. It works best with strong conversion tracking and sufficient budget for the algorithm to learn.

Related: Smart Bidding, Google Shopping, Responsive Search Ad

Phrase Match

A keyword match type (denoted with quotation marks: "running shoes") that triggers your ad for searches containing the meaning of your keyword in the order specified. Phrase match is narrower than broad match but wider than exact match. It captures queries like "best running shoes for women" and "buy running shoes online" but would not trigger for "shoes I can run errands in." Phrase match balances reach and control for most advertisers.

Related: Broad Match, Exact Match, Keyword Match Type

Pixel

A small piece of JavaScript code placed on your website to track visitor behavior and send data back to an advertising platform. The term originated from the 1x1 pixel tracking images used in early digital advertising. Today, pixels are sophisticated scripts that track page views, conversions, and custom events. The Meta Pixel, Google Ads tag, and LinkedIn Insight Tag are the most commonly deployed tracking pixels.

Placement

A specific website, app, or YouTube channel where your display or video ads appear. Managed placements let you choose exactly where your ads run. Automatic placements let Google decide based on your targeting. Regularly review placement reports and exclude low-performing or brand-unsafe sites. A small number of high-quality placements often outperform broad distribution across thousands of random sites.

Programmatic

The automated buying and selling of digital ad inventory using technology platforms (DSPs, SSPs, and ad exchanges) instead of manual negotiations. Programmatic advertising enables real-time bidding on individual impressions based on audience data and contextual signals. It covers display, video, native, audio, CTV, and digital out-of-home inventory. Programmatic accounts for over 90% of digital display ad spending.

Related: DSP, Supply-Side Platform, Display Ads, CPM

Product Feed

See Feed (Product).

Product Listing Ad

The original name for Google Shopping ads - product ads that display an image, price, title, and merchant name. The term is still used informally, though Google now calls them Shopping ads. Product listing ads appear on Google Search, the Shopping tab, and Google partner sites. They drive higher qualified traffic than text ads because users can see exactly what they are getting before clicking.

Q

Quality Score

Google's 1-10 rating of the quality and relevance of your keywords, ads, and landing pages. Quality Score determines your cost per click and ad position through its impact on Ad Rank. The three components are expected CTR, ad relevance, and landing page experience. A Quality Score of 7+ means you are paying below average for your position; below 5 means you are overpaying. Improving Quality Score is the most cost-effective optimization lever in Google Ads.

Related: Ad Rank, CPC, Landing Page, Click-Through Rate

Larry Kim shared a data-backed finding about the binary nature of landing page and keyword relevance in Quality Score:

Query

The actual text a user types into a search engine. A query is different from a keyword - your keyword is what you bid on, and the query is what the user actually searches. The Search Terms Report shows which queries triggered your ads, revealing gaps between what you target and what users actually type. Regular query analysis is one of the most valuable activities in PPC management.

R

Remarketing

Google's term for retargeting - showing ads to people who have previously visited your website or used your app. Remarketing lists can be built from specific page visitors (product pages, cart abandoners, converters), and each list can receive different messaging and bid strategies. Remarketing Lists for Search Ads (RLSA) let you adjust search bids for returning visitors, who typically convert at 2-3x the rate of new visitors.

Related: Retargeting, Audience, Display Ads

Responsive Search Ad

The default ad format in Google Ads Search campaigns. You provide up to 15 headlines and 4 descriptions, and Google automatically tests different combinations to find top performers. RSAs replaced expanded text ads in 2022. Write headlines that work independently in any combination, use at least 8-10 unique headlines to give the algorithm enough variety, and pin your most important message to position 1 if it must always appear.

Related: Ad Copy, Headline, Search Ads

Retargeting

Showing ads to users who have previously interacted with your website, app, or content. Retargeting works because most visitors do not convert on their first visit - they need multiple exposures before taking action. Effective retargeting segments users by their behavior (viewed product vs. added to cart vs. started checkout) and serves different messages at each stage. Retargeting consistently delivers the lowest cost per conversion of any advertising tactic.

Related: Remarketing, Lookalike Audience, Facebook Pixel, Audience

ROAS (Return on Ad Spend)

Revenue generated divided by ad spend, expressed as a ratio or percentage. A ROAS of 4:1 (or 400%) means $4 in revenue for every $1 spent on ads. Target ROAS varies by business model and margins: e-commerce with 40% margins might target 3:1, while a SaaS company with 80% margins might accept 1.5:1. ROAS is the most common profitability metric for e-commerce advertisers because it directly connects ad investment to revenue outcomes.

Related: ROI, Target ROAS, Conversion Rate, CPA

ROI

Return on Investment - profit generated relative to total investment cost, expressed as a percentage. ROI differs from ROAS because it accounts for all costs (product costs, fulfillment, overhead), not just ad spend. An ad campaign with 400% ROAS might have only 50% ROI after factoring in product margins. ROI gives a more complete picture of business profitability but is harder to calculate because it requires cost data beyond just ad spend.

Related: ROAS, CAC, LTV

S

Search Ads

Text-based advertisements that appear on search engine results pages when users search for specific keywords. Search ads capture existing demand - people are actively looking for something - making them the highest-intent advertising format. Google Search ads typically show above organic results, marked with a "Sponsored" label. Search advertising is the backbone of most PPC strategies and often delivers the best ROAS of any digital channel.

Related: Pay-Per-Click, Quality Score, Keyword, Ad Rank

Search Partners

Websites outside of Google.com that partner with Google to show search ads. Google's search partner network includes hundreds of sites like ask.com, shopping sites, and other search engines. Search partners are included by default in Google Ads campaigns. Performance on search partners is often lower than on Google.com itself. You can opt out of search partners at the campaign level if they are not performing.

Search Terms Report

A Google Ads report that shows the actual search queries that triggered your ads. This report is distinct from your keyword list - it shows what real users typed, which may differ significantly from your targeted keywords. Review it regularly to find new keyword opportunities (queries converting well that you are not explicitly targeting) and add negative keywords (irrelevant queries wasting budget). Google reduced search term visibility in 2020, hiding queries that do not reach a volume threshold.

Ginny Marvin voiced the advertising industry's frustration when Google reduced search term report visibility:

Shopping Ads

Product-based ads that display an image, price, title, and store name, powered by your product feed in Google Merchant Center. Shopping ads appear on Google Search, the Shopping tab, YouTube, and partner sites. They pre-qualify clicks by showing the product and price upfront, resulting in higher conversion rates than text ads for e-commerce. Performance Max has largely absorbed traditional Shopping campaigns, though standalone Shopping campaigns still exist.

Related: Google Shopping, Google Merchant Center, Product Listing Ad

Sitelink

An ad extension that adds extra links below your main ad, each pointing to a different page on your website. Sitelinks increase your ad's visual footprint and give users multiple entry points. Common sitelinks include "Pricing," "Free Trial," "Contact Us," and product categories. Google selects which sitelinks to show based on relevance to the query. Adding at least 4 sitelinks is recommended for every search campaign.

SKAg

Single Keyword Ad Group - an account structure where each ad group contains only one keyword. SKAgs were popular because they maximized ad relevance (your ad could perfectly match the keyword). With responsive search ads and Google's expanding match type definitions, SKAgs have become less necessary and more difficult to maintain. Most PPC experts have moved toward slightly broader ad group themes of 3-8 tightly related keywords.

Smart Bidding

Google's family of automated bid strategies that use machine learning to optimize for conversions or conversion value. Smart Bidding strategies include Target CPA, Target ROAS, Maximize Conversions, and Maximize Conversion Value. The algorithm adjusts bids in real-time using signals like device, location, time of day, remarketing list, browser, and operating system. Smart Bidding requires at least 15-30 conversions per month to perform well.

Related: Target CPA, Target ROAS, Maximize Conversions, Bid Strategy

Smart Campaign

A simplified Google Ads campaign type designed for small businesses with limited advertising experience. Smart Campaigns automate keyword selection, bidding, ad creation, and targeting based on your business category and goals. The trade-off is minimal control and limited reporting. Most businesses outgrow Smart Campaigns quickly and benefit from switching to standard Search or Performance Max campaigns for better performance and visibility.

Supply-Side Platform

Technology that helps publishers sell their ad inventory programmatically. SSPs connect to ad exchanges and DSPs, manage auction mechanics, and maximize revenue for publishers by exposing their inventory to the broadest set of buyers. Major SSPs include Google Ad Manager, PubMatic, and Index Exchange. As an advertiser, you do not interact with SSPs directly, but they are part of the infrastructure that determines where your programmatic ads appear.

T

Target CPA

A Smart Bidding strategy where you set a desired cost per acquisition, and Google automatically adjusts bids to average that CPA over time. The algorithm bids higher for auctions likely to convert and lower for those unlikely to convert. Target CPA does not guarantee every conversion costs exactly your target - some will be higher and some lower. Set your target CPA at or slightly above your historical CPA to start, then lower it gradually as performance stabilizes.

Related: Smart Bidding, CPA, Maximize Conversions

Target ROAS

A Smart Bidding strategy that optimizes bids to achieve a target return on ad spend. You set a target (e.g., 400% = $4 revenue for every $1 spent), and Google adjusts bids based on the predicted conversion value of each auction. Target ROAS requires conversion value tracking (not just conversion counting) and at least 15 conversions with value data in the last 30 days. It works best for e-commerce businesses with variable order values.

Related: Smart Bidding, ROAS, Bid Strategy

Third-Party Data

Data collected by entities that do not have a direct relationship with the user, typically aggregated and sold by data brokers. Third-party cookies, the primary mechanism for collecting this data in browsers, are being phased out across all major browsers. This shift is forcing advertisers toward first-party data strategies and privacy-safe targeting methods like contextual advertising and Google's Privacy Sandbox APIs. Advertisers relying heavily on third-party data need to diversify their targeting approach.

Tracking Template

A URL template in Google Ads that appends tracking parameters to your landing page URL. Tracking templates let you add UTM parameters, click IDs, and custom parameters without modifying the actual landing page URL. They can be set at the account, campaign, ad group, keyword, or ad level. Proper tracking templates ensure your analytics platform can attribute each click to the correct campaign, ad group, and keyword.

U

Universal App Campaign

Now called App campaigns, this Google Ads campaign type promotes mobile apps across Search, Display, YouTube, and Google Play from a single campaign. You provide text, images, video, and budget, and Google's AI handles targeting and bidding. App campaigns optimize for installs or in-app actions (purchases, sign-ups). They require a minimum of 10 conversions per day for the algorithm to optimize effectively.

V

View-Through Conversion

A conversion that occurs after someone sees your ad but does not click on it. The user later visits your website through another channel (search, direct, etc.) and converts. View-through conversions are reported separately from click-through conversions because the causal link is weaker. They are most relevant for display, video, and YouTube campaigns that build awareness. Most platforms use a 1-day view-through window by default, though this is configurable.

Video Ads

Advertisements delivered in video format across platforms like YouTube, connected TV, social media, and programmatic video networks. Video ad formats include skippable in-stream (skip after 5 seconds), non-skippable in-stream (15-30 seconds), bumper ads (6 seconds), and outstream (auto-play in content). Video is the most engaging ad format but also the most expensive to produce. YouTube is the largest video ad platform with over 2 billion monthly active users.

W

Walled Garden

A closed advertising ecosystem where the platform controls targeting, measurement, and data sharing. Google, Meta, Amazon, and Apple are the major walled gardens. Data from these platforms stays inside - you cannot export user-level data or combine it with other platforms' data for cross-channel analysis. Walled gardens make multi-touch attribution harder and increase advertiser dependence on each platform's own reporting, which tends to overcount conversions through self-attribution bias.

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Cross-Channel (X-Channel)

An advertising approach that coordinates messaging and measurement across multiple platforms and channels. Cross-channel strategies recognize that customers interact with brands across search, social, display, email, and offline before converting. Effective cross-channel advertising maintains consistent messaging, uses sequential retargeting across platforms, and employs attribution modeling to understand each channel's contribution. MeasureBoard's Competitive Intelligence tools help you understand competitor presence across channels.

Y

YouTube Ads

Video advertisements shown on YouTube, the world's second-largest search engine with over 2 billion monthly active users. YouTube ad formats include skippable in-stream (pay only if viewer watches 30+ seconds), non-skippable in-stream (15-second forced view), bumper ads (6-second non-skippable), and YouTube Shorts ads. YouTube offers advanced targeting including custom intent audiences (based on recent Google searches), making it one of the few video platforms that can target active purchase intent.

Z

Zero-Click

A search that ends without the user clicking any result - they get their answer directly from the search results page. Google's featured snippets, knowledge panels, and AI Overviews have increased zero-click searches to roughly 60% of all Google searches. For advertisers, zero-click searches affect keyword strategy: informational queries ("weather today") generate high impressions but few clicks, while commercial queries ("buy running shoes") still drive meaningful click volume. Focus ad spend on keywords with strong commercial intent where users still need to visit a website.