PPC Glossary: 65+ Terms Defined for 2026

A – C

PPC terms starting with A through C

Ad Assets (formerly Ad Extensions)Additional information that expands your ads beyond the headline and description. Google renamed extensions to “assets” in 2022. Types include sitelinks, callouts, structured snippets, call assets, location assets, price assets, and promotion assets. Ads with 4+ assets typically see a 15-20% higher CTR than ads without them. Ad CopyThe text that appears in your paid ad. In Google Ads responsive search ads, you provide up to 15 headlines (30 characters each) and 4 descriptions (90 characters each). Google’s machine learning tests combinations and serves the best-performing variations to each searcher. Ad GroupA container within a campaign that holds a set of ads and keywords sharing a common theme. For example, a shoe retailer might have an ad group for “running shoes” and a separate one for “dress shoes.” Keeping ad groups tightly themed (10-20 keywords per group) improves Quality Score. Ad RankThe value that determines your ad’s position on the search results page. Ad Rank = bid amount x Quality Score x expected impact of assets and ad formats. A higher Ad Rank means a better position. You can outrank a competitor who bids more than you if your Quality Score is significantly better. Ad Schedule (Dayparting)A setting that controls which days and hours your ads are eligible to show. If your business only takes calls during business hours, you can schedule ads to run Monday-Friday, 8am-6pm. You can also set bid adjustments to bid higher during peak conversion hours. AI Max for SearchA 2025 Google Ads feature that uses AI to automatically find new converting search queries, generate headlines, and match landing pages. Google reports an average 14% conversion lift from AI Max. It expands your reach beyond your keyword list while maintaining your performance targets. Audience TargetingShowing ads to specific groups of people based on demographics, interests, behaviors, or their relationship with your brand. Google Ads audience types include in-market audiences (people actively shopping), affinity audiences (people with specific interests), and custom audiences (defined by you using keywords, URLs, or apps). Bid StrategyThe approach you use to set how much you pay per click or conversion. Manual strategies give you control over individual keyword bids. Automated strategies (Smart Bidding) use Google’s machine learning to optimize bids in real-time. Common automated strategies: Target CPA, Target ROAS, Maximize Conversions, and Maximize Conversion Value. Broad MatchA keyword match type that shows your ad for searches related to your keyword, including synonyms, related searches, and queries Google’s AI considers relevant. In 2026, broad match paired with Smart Bidding is Google’s recommended default. It provides the widest reach but requires active negative keyword management to control relevance. Budget (Daily Budget)The average amount you’re willing to spend per day on a campaign. Google may spend up to 2x your daily budget on high-traffic days, but won’t exceed your monthly limit (daily budget x 30.4). A $100 daily budget means Google won’t charge you more than $3,040 in a calendar month. Call-to-Action (CTA)The instruction in your ad telling the user what to do next. “Shop Now,” “Get a Quote,” “Sign Up Free,” and “Call Today” are common PPC CTAs. Specific CTAs outperform generic ones. “Get Your Free Audit” converts better than “Learn More” because it promises a concrete outcome. CampaignThe highest organizational level in a Google Ads account. Each campaign has its own budget, targeting settings, and bid strategy. Campaign types include Search, Display, Shopping, Video (YouTube), Performance Max, and Demand Gen. Most accounts have 5-20 active campaigns. Click-Through Rate (CTR)The percentage of people who click your ad after seeing it. CTR = clicks / impressions x 100. The average Google Search CTR across industries is 3.17% (WordStream, 2025). A CTR below 2% usually indicates ad copy or targeting problems. CTR directly affects your Quality Score. ConversionAn action you’ve defined as valuable that a user takes after clicking your ad. Conversions can be purchases, form submissions, phone calls, app downloads, or email signups. You define what counts as a conversion through conversion tracking in Google Ads or GA4. Conversion RateThe percentage of clicks that result in a conversion. Conversion Rate = conversions / clicks x 100. The average Google Ads conversion rate across industries is 4.4% for Search and 0.57% for Display (WordStream, 2025). E-commerce tends to be lower (2-3%); lead gen tends to be higher (5-8%). Conversion TrackingThe measurement system that records when a user completes a conversion after clicking your ad. Set up via Google Tag Manager, the Google Ads tag, or GA4 integration. Without conversion tracking, you’re running PPC blind. Every paid media account should have conversion tracking configured before spending a dollar. Cost Per Acquisition (CPA)The average cost to acquire one conversion. CPA = total cost / number of conversions. If you spent $1,000 and got 20 leads, your CPA is $50. Target CPA is a bid strategy that automatically sets bids to get as many conversions as possible at your target CPA. Cost Per Click (CPC)The amount you pay each time someone clicks your ad. Actual CPC is usually lower than your maximum bid because Google’s auction charges you only $0.01 more than the next-highest Ad Rank below yours. Average CPC across all industries in Google Ads is $2.69 for Search (WordStream, 2025). Cost Per Mille (CPM)The cost per 1,000 impressions. CPM is the standard pricing model for Display and YouTube ads where the goal is awareness, not clicks. Average Display CPM is $3-$10 depending on targeting specificity. Customer MatchA feature that lets you upload your customer email list to Google Ads and target (or exclude) those users across Search, YouTube, Gmail, and Display. Google lowered the minimum list size from 1,000 to 100 users in 2025, making it accessible to smaller advertisers.

D – G

PPC terms starting with D through G

Demand Gen CampaignA Google Ads campaign type (replacing Discovery Ads in 2023) that runs across YouTube, YouTube Shorts, Discover, and Gmail. Expanded to desktop placements in 2025. Demand Gen campaigns use audience targeting and creative assets to reach users during browsing, not active searching. Display NetworkGoogle’s network of over 2 million websites, apps, and videos where Display ads can appear. Display ads are image or responsive ads shown to users as they browse content online. Display campaigns are used for awareness and retargeting, not direct response search targeting. Dynamic Search Ads (DSA)Ads that automatically target relevant search queries based on your website content instead of keywords. Google crawls your site and generates headlines dynamically. DSAs are useful for large e-commerce sites with thousands of products where manual keyword management isn’t practical. Enhanced CPC (ECPC)A semi-automated bid strategy that adjusts your manual bids up or down based on the likelihood of a conversion. Google analyzes signals like device, location, time of day, and browser to decide whether to increase your bid. ECPC gives you more control than fully automated strategies while still using machine learning. Exact MatchA keyword match type (denoted with [brackets]) that shows your ad only for searches with the same meaning as your keyword. Note: exact match hasn’t been truly “exact” since 2019. Google now includes close variants, synonyms, and implied terms. [running shoes] may match “shoes for running” or “jogging sneakers.” FrequencyThe average number of times a single user sees your ad over a given period. Relevant to Display and YouTube campaigns. A frequency above 3-5 can cause ad fatigue, where users become blind to your ad or develop negative associations with your brand. Google Ads EditorA free desktop application for managing Google Ads accounts offline. Essential for bulk changes: editing thousands of keywords, copying campaigns, and making account-wide updates. Every PPC specialist should know how to use it. Download at ads.google.com/home/tools/ads-editor/. Google Tag Manager (GTM)A free tag management system that lets you deploy tracking codes (tags) on your website without editing the source code. Used to install conversion tracking pixels, Google Analytics, Meta pixels, and custom event tracking. GTM is the industry standard for PPC measurement setup.

H – L

PPC terms starting with H through L

ImpressionOne instance of your ad being shown to a user. If your ad appeared 10,000 times in a day, you received 10,000 impressions. Impressions are free in Search campaigns (you pay only for clicks). In CPM-based Display and YouTube campaigns, you pay per 1,000 impressions. Impression ShareThe percentage of impressions your ad received compared to the total available impressions. If your impression share is 60%, your ads showed for 60% of the eligible searches. Lost impression share splits into two causes: budget (you ran out of money) and rank (your Ad Rank wasn’t high enough). In-Market AudienceA Google audience segment of users who are actively researching or comparing products and services in a specific category. Google identifies these users based on search behavior, website visits, and content consumption. In-market audiences are among the highest-converting targeting options in Google Ads. KeywordA word or phrase you bid on in Search campaigns. When a user searches a query that matches your keyword (based on match type), your ad is eligible to show. Keywords are the foundation of Search campaign targeting. Most accounts have hundreds to thousands of active keywords. Keyword Match TypeThe setting that controls which search queries trigger your keyword. Three match types exist: Broad Match (widest reach, includes related searches), Phrase Match (contains your keyword in order), and Exact Match (same meaning as your keyword). Google recommends Broad Match with Smart Bidding for most campaigns as of 2026. Landing PageThe web page a user arrives at after clicking your ad. Landing page quality affects your Quality Score, conversion rate, and CPC. Best practices: match the landing page headline to the ad copy, include a clear CTA above the fold, and keep the page load time under 3 seconds. Landing Page ExperienceOne of the three components of Quality Score. Google evaluates whether your landing page is relevant to the ad and keyword, easy to use on mobile, and fast-loading. A “below average” landing page experience raises your CPC and lowers your Ad Rank. Location Targeting (Geo-Targeting)The ability to show ads only to users in specific geographic areas: countries, states, cities, zip codes, or a radius around a point. Essential for local businesses. You can also exclude locations where you don’t serve customers. Lookalike Audience (Similar Audience)An audience of users who share characteristics with your existing customers. Google deprecated Similar Audiences in 2023 but offers similar functionality through optimized targeting and audience expansion. Meta Ads still supports Lookalike Audiences based on your customer list, website visitors, or app users.

M – P

PPC terms starting with M through P

Manual CPCA bid strategy where you set the maximum CPC for each keyword individually. Gives full control but requires constant monitoring and adjustment. Most Google Ads accounts have moved to automated bidding, but manual CPC remains useful for new campaigns with limited conversion data or very small budgets. Maximize ClicksAn automated bid strategy that sets bids to get as many clicks as possible within your budget. Useful for driving traffic but doesn’t optimize for conversions. Best used early in a campaign’s life when you need click data to feed future Smart Bidding strategies. Maximize ConversionsAn automated bid strategy that uses Google’s machine learning to get the most conversions within your budget. Google adjusts bids in real-time based on signals like device, location, time, and user behavior. Requires at least 15-30 conversions per month to optimize effectively. Maximize Conversion ValueSimilar to Maximize Conversions but optimizes for total conversion value rather than conversion count. Best for e-commerce accounts where different conversions have different values (a $500 order is worth more than a $20 order). Negative KeywordA keyword that prevents your ad from showing for irrelevant searches. If you sell luxury watches, adding “cheap” as a negative keyword stops your ad from appearing when someone searches “cheap watches.” Regular negative keyword audits are one of the most impactful PPC optimization tasks. Review your Search Terms report weekly. Optimization ScoreA Google-generated percentage (0-100%) estimating how well your account is set up to perform. Based on Google’s recommendations (many of which increase your spend). Treat it as a directional signal, not a KPI. An 80% optimization score doesn’t mean 80% of your potential is met. Pay-Per-Click (PPC)An advertising model where you pay only when someone clicks your ad. Google Ads is the largest PPC platform. Other PPC platforms include Microsoft Ads (Bing), Meta Ads (Facebook/Instagram), LinkedIn Ads, and Amazon Ads. PPC is the opposite of CPM (cost per thousand impressions), where you pay for views. Performance Max (PMax)A Google Ads campaign type that runs ads across all Google properties (Search, Display, YouTube, Discover, Gmail, Maps) from a single campaign. You provide creative assets, audience signals, and goals. Google’s AI decides where and when to show your ads. Launched in 2021, PMax is now Google’s default recommendation for most advertisers. Phrase MatchA keyword match type (denoted with “quotes”) that triggers your ad when the search query contains the meaning of your keyword in the correct order. “running shoes” in phrase match shows for “best running shoes for flat feet” but not “shoes for running a business.” Phrase match sits between exact match (narrow) and broad match (wide). PixelA snippet of code placed on your website that tracks user behavior for advertising platforms. The Meta Pixel tracks Facebook and Instagram ad conversions. The Google Ads tag (global site tag) tracks Google Ads conversions. Pixels are essential for conversion tracking, retargeting, and audience building.

Q – S

PPC terms starting with Q through S

Quality ScoreGoogle’s rating (1-10) of the quality and relevance of your keywords, ads, and landing pages. Quality Score has three components: expected click-through rate, ad relevance, and landing page experience. A Quality Score of 7+ is considered good. Higher Quality Scores lower your CPC and improve your Ad Rank. It’s the single most important metric most advertisers ignore. Remarketing (Retargeting)Showing ads to users who have previously visited your website or interacted with your brand. Remarketing audiences are built through pixels installed on your site. Remarketing ads typically have 2-3x higher conversion rates than prospecting ads because the user already knows your brand. Responsive Display Ad (RDA)A Display ad format where you provide multiple headlines, descriptions, images, and logos. Google’s machine learning tests combinations and optimizes for performance. RDAs replaced standard Display ads as the default format. Responsive Search Ad (RSA)The default Search ad format in Google Ads since 2022 (Expanded Text Ads were retired). You provide up to 15 headlines and 4 descriptions. Google mixes and matches them to create the best combination for each search. Pin specific headlines to positions when you need guaranteed messaging (like brand names or legal disclaimers). Return on Ad Spend (ROAS)The revenue generated for every dollar spent on advertising. ROAS = revenue from ads / ad spend. A ROAS of 4:1 means you earned $4 for every $1 spent. Target ROAS is a Smart Bidding strategy that optimizes bids to achieve your desired return. E-commerce benchmarks vary by industry but 3:1 to 5:1 is typical for profitable campaigns. Search NetworkThe collection of search-related websites where Google Search ads can appear. Includes Google Search, Google Shopping, Google Maps, and Google search partner sites. Most Search campaigns run on Google Search only, with search partners as an optional addition. Search Terms ReportA report showing the actual queries users typed that triggered your ads. Different from your keyword list, which shows what you’re bidding on. The Search Terms report is where you find irrelevant queries to add as negatives and new keyword ideas to add to your campaigns. Review it at least weekly. Shopping CampaignA campaign type for e-commerce advertisers that shows product listings (image, title, price, store name) in Google Search results and the Shopping tab. Shopping campaigns pull product data from your Merchant Center feed. Performance Max has largely replaced standard Shopping campaigns, but standalone Shopping campaigns still exist. Smart BiddingGoogle’s umbrella term for 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. Smart Bidding considers signals like device, location, time, remarketing list, language, and operating system in real-time. Smart Bidding ExplorationA 2025 feature that lets Smart Bidding proactively find conversions from queries outside your typical performance patterns. It expands your reach to non-obvious converting searches that traditional bidding would miss.

T – Z

PPC terms starting with T through Z

Target CPA (Cost Per Acquisition)A Smart Bidding strategy that automatically sets bids to get as many conversions as possible at your target cost per acquisition. If your target CPA is $50, Google adjusts bids auction-by-auction to average $50 per conversion. Requires at least 15-30 conversions in the past 30 days for reliable optimization. Target ROAS (Return on Ad Spend)A Smart Bidding strategy that sets bids to achieve your target return on ad spend. If your target ROAS is 400%, Google bids to generate $4 in revenue for every $1 in ad spend. Best for e-commerce accounts with accurate conversion value tracking. UTM ParametersTags added to URLs that track the source, medium, campaign, term, and content of your traffic in Google Analytics. Example: ?utm_source=google&utm_medium=cpc&utm_campaign=brand. UTMs are essential for attributing conversions to specific campaigns, especially when running ads across multiple platforms. View-Through ConversionA conversion that occurs after a user sees (but doesn’t click) your Display or YouTube ad, then later visits your site and converts. The default lookback window is 1 day for Display and 30 days for YouTube. View-through conversions are counted separately from click-through conversions in Google Ads reporting. Wasted SpendMoney spent on clicks that have no chance of converting. Common causes: irrelevant search queries, poor landing pages, targeting the wrong locations, and running ads during non-converting hours. Most accounts waste 20-30% of their budget. Regular Search Terms report audits and negative keyword management are the primary fix.

“The PPC vocabulary has expanded by 30-40% since 2022. Performance Max, AI Max, Demand Gen, Smart Bidding Exploration – these weren’t in anyone’s glossary three years ago. If your team is still talking about Expanded Text Ads and manual bidding as the default, they’re operating with outdated mental models.”
Hardik Shah, Founder of ScaleGrowth.Digital

At ScaleGrowth.Digital’s PPC practice, we manage campaigns across Google Ads, Meta Ads, and LinkedIn Ads. The clients who get the best results are the ones whose teams share a common vocabulary. When a PPC specialist says “our impression share dropped because of budget, not rank,” the marketing manager needs to know what that means without a 10-minute explanation. This glossary exists for that reason. Bookmark it, share it with your team, and use it as onboarding material for new hires. We update it quarterly as platforms add new features and deprecate old ones.

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FAQ

Frequently Asked Questions

What is PPC in simple terms?

PPC stands for pay-per-click. It’s an advertising model where you pay a fee each time someone clicks your ad. Google Ads is the largest PPC platform. When you search Google and see ads at the top of the results, those advertisers pay each time you click. The alternative model is CPM (cost per mille), where you pay for impressions regardless of clicks.

What is the most important PPC metric?

It depends on your goal. For lead generation, CPA (cost per acquisition) is the most important metric because it tells you what you’re paying for each lead. For e-commerce, ROAS (return on ad spend) matters most because it ties ad spend directly to revenue. For brand awareness campaigns, CPM and reach are the primary metrics. CTR and Quality Score are diagnostic metrics that affect all other metrics downstream.

What is the difference between CPC and CPA?

CPC (cost per click) is what you pay for each click on your ad. CPA (cost per acquisition) is what you pay for each conversion (sale, lead, signup). CPA = total spend / total conversions. If your CPC is $3 and your conversion rate is 5%, your CPA is $60 ($3 / 0.05). CPC is an input cost; CPA is the outcome cost that determines profitability.

What is a good Quality Score in Google Ads?

Quality Score is rated 1-10. A score of 7 or higher is considered good. Scores of 8-10 mean you’re paying below-average CPCs and getting premium ad positions. Scores below 5 mean you’re overpaying for clicks and may have ad relevance or landing page problems. Focus on improving the three components: expected CTR, ad relevance, and landing page experience.

What is Performance Max in Google Ads?

Performance Max (PMax) is a campaign type that runs ads across all Google surfaces (Search, Display, YouTube, Discover, Gmail, Maps) from a single campaign. You provide creative assets (text, images, videos), audience signals, and conversion goals. Google’s AI decides where and when to show your ads. PMax launched in 2021 and is now Google’s default recommendation for most advertisers, especially e-commerce brands.

The PPC Glossary: 65+ Terms Every Advertiser Should Know

What does this PPC glossary cover?