Used by ecommerce brands, agencies, and creators.
Advertising Glossary
Every advertising term you need to know, defined clearly for ecommerce teams running creative tests. From CPM to creative fatigue to hook rate.
CPM
Cost per mille — the price an advertiser pays for one thousand ad impressions. It is the standard pricing unit for awareness and reach campaigns.
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CPA
Cost per acquisition — the total ad spend divided by the number of conversions. It measures how efficiently a campaign turns budget into customers.
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ROAS
Return on ad spend — revenue generated divided by the amount spent on advertising. A ROAS of 3x means every dollar spent returned three dollars in revenue.
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CTR
Click-through rate — the percentage of people who see an ad and click on it. It is a key indicator of how compelling the ad creative and offer are.
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Hook Rate
The percentage of viewers who watch past the first three seconds of a video ad. It measures how effectively the opening grabs attention in a scroll environment.
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Thumb-Stop
The moment a user stops scrolling to watch a video ad in their feed. Thumb-stop rate measures the percentage of impressions that result in a pause.
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Creative Fatigue
The decline in ad performance that occurs when the same audience sees the same creative too many times. It manifests as rising CPMs, falling CTR, and declining ROAS.
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Ad Frequency
The average number of times a single user sees the same ad within a given period. High frequency without creative refresh leads to fatigue and wasted spend.
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Lookalike Audience
An ad platform audience built by finding new users who share behavioral and demographic traits with an existing customer list or website visitor set.
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Retargeting
Serving ads to people who have previously interacted with a brand — visited the site, added to cart, or engaged with content — but did not convert.
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Conversion Rate
The percentage of visitors or ad clickers who complete a desired action, such as making a purchase, signing up, or adding to cart.
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AOV
Average order value — the mean dollar amount spent per transaction. Increasing AOV is one of three core levers for growing ecommerce revenue alongside traffic and conversion rate.
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LTV
Lifetime value — the total revenue a business expects from a single customer over the entire relationship. It determines how much a brand can afford to spend acquiring each customer.
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CAC
Customer acquisition cost — the total cost of acquiring a new customer, including ad spend, creative production, and related overhead.
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Impression
A single instance of an ad being displayed to a user. One person seeing the same ad three times counts as three impressions but only one reach.
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Reach
The total number of unique users who see an ad at least once during a campaign. Unlike impressions, reach counts each person only once regardless of how many times they saw the ad.
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Engagement Rate
The percentage of people who interact with an ad through likes, comments, shares, or saves relative to the number who saw it.
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Video Completion Rate
The percentage of viewers who watch a video ad all the way to the end. Higher completion rates signal strong creative that holds attention throughout.
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Hold Rate
The percentage of viewers still watching at specific time markers throughout a video ad (e.g., 25%, 50%, 75%). It maps the drop-off curve and reveals where attention is lost.
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Scroll-Stop Rate
The percentage of users who pause their scrolling when an ad enters the viewport. It measures initial attention capture before the hook even lands.
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Creative Testing
The systematic process of running multiple ad variations simultaneously to identify which creative elements — hooks, angles, formats — drive the best performance.
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Split Test
An experiment where traffic is divided equally between two or more ad variations to measure which performs better on a specific metric.
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A/B Testing
A controlled experiment comparing two versions of an ad (version A vs. version B) to determine which drives better results on a target metric.
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Media Buying
The process of purchasing ad placements across platforms, managing budgets, and optimizing campaigns to hit performance targets.
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Ad Spend
The total amount of money invested in advertising over a given period. It is the primary input that media buyers optimize against revenue or conversion targets.
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Blended ROAS
The overall return on ad spend across all channels and campaigns combined, rather than isolated to a single campaign or platform.
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MER
Marketing efficiency ratio — total revenue divided by total marketing spend across all channels. It is a holistic metric that avoids the attribution pitfalls of platform-reported ROAS.
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New Customer Acquisition
The process and cost of winning first-time buyers who have never purchased from the brand before. It is distinct from retaining or reactivating existing customers.
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Cost Per Click
The price an advertiser pays each time a user clicks on their ad. It is calculated by dividing total spend by the number of clicks received.
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Cost Per View
The price an advertiser pays for each qualified video view, typically counted after a viewer watches at least a few seconds or a set percentage of the video.
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View-Through Rate
The percentage of people who see a video ad and later convert without clicking on it directly. It captures the delayed influence of video advertising on purchase behavior.
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Ad Recall
A measure of how well audiences remember seeing or hearing an ad after exposure. It is commonly assessed through brand lift surveys.
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Brand Lift
The measurable increase in brand awareness, favorability, or purchase intent caused by an advertising campaign, typically measured through pre- and post-campaign surveys.
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Direct Response
An advertising approach designed to drive an immediate, measurable action — a click, a sign-up, or a purchase — rather than long-term brand building.
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Podcast Ad
An audio advertisement embedded within a podcast episode, typically read by the host in a conversational tone that matches the show's style.
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Host-Read Ad
A podcast advertisement delivered by the host in their own voice and style, as opposed to a pre-recorded spot. Host-read ads consistently outperform pre-produced inserts.
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UGC
User-generated content — media created by real customers or creators rather than the brand itself. It includes reviews, unboxings, testimonials, and casual product content.
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User-Generated Content
The full term for UGC — any content about a brand created by its customers, fans, or hired creators rather than the brand's internal team.
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Studio Shoot
A professional video or photo production session conducted in a controlled studio environment with professional equipment, lighting, and crew.
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Influencer Marketing
A strategy where brands partner with individuals who have dedicated social followings to promote products through sponsored content and endorsements.
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Paid Social
Advertising on social media platforms where brands pay for placement, reach, or engagement rather than relying on organic distribution alone.
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Organic Social
Unpaid social media content distributed through a brand's own channels, relying on the platform algorithm and audience engagement for reach.
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Meta Ads
Advertising across Meta's family of platforms — Facebook, Instagram, Messenger, and the Audience Network — managed through Meta Ads Manager.
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TikTok Ads
Advertising on TikTok through formats like In-Feed Ads, Spark Ads, and TopView, managed through TikTok Ads Manager.
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Reels Ads
Video advertisements that appear within the Instagram Reels feed, designed to match the short-form, vertical video format that users engage with organically.
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YouTube Shorts
YouTube's short-form vertical video format (up to 60 seconds) and the ad placements that appear within the Shorts feed.
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Programmatic
The automated buying and selling of digital ad inventory in real-time through algorithms and bidding systems, rather than manual negotiation.
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Demand Gen
Marketing activities focused on creating awareness and interest among audiences who are not yet actively searching for a solution. It sits at the top of the funnel.
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Top of Funnel
The awareness stage of the marketing funnel where potential customers first discover a brand or product. Content at this stage prioritizes reach and education over conversion.
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Mid-Funnel
The consideration stage where prospects are evaluating options and comparing solutions. Content here builds deeper understanding and addresses objections.
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Bottom of Funnel
The decision stage where prospects are ready to buy but may need a final push — a compelling offer, urgency, or reassurance — to complete the purchase.
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Creative Brief
A document outlining the objectives, audience, messaging, and constraints for an advertising creative project. It aligns stakeholders before production begins.
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Ad Copy
The written text in an advertisement, including headlines, body text, captions, and calls to action. Strong ad copy communicates the offer clearly and compellingly.
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Video Ad
An advertisement in video format, displayed across social feeds, pre-roll placements, connected TV, and other digital channels.
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Short-Form Video
Video content under 60 seconds, optimized for vertical viewing on platforms like TikTok, Instagram Reels, and YouTube Shorts.
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Long-Form Video
Video content longer than 60 seconds, typically used for deeper storytelling, tutorials, or detailed product explanations on platforms like YouTube.
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Product Feed
A structured data file containing product information — titles, descriptions, images, prices — that advertising platforms use to generate dynamic product ads.
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Dynamic Creative
An ad format where the platform automatically combines different creative elements — headlines, images, descriptions — to find the best-performing combination for each audience segment.
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Creative Automation
The use of tools and technology to streamline or automate the production of ad creatives, reducing manual effort and accelerating output.
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Ad Fatigue
The decline in audience responsiveness to an ad after repeated exposure. Symptoms include falling CTR, rising CPA, and decreasing ROAS over time.
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Frequency Capping
A campaign setting that limits how many times a single user sees the same ad within a given time period. It prevents overexposure and wasted spend.
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Audience Segmentation
The practice of dividing a broad audience into smaller groups based on shared characteristics — demographics, behavior, purchase history — to deliver more relevant messaging.
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Custom Audience
An ad platform audience built from a brand's own data — email lists, website visitors, app users, or customer databases — used for retargeting or exclusion.
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Broad Targeting
An ad targeting strategy that uses minimal audience restrictions, allowing the platform's algorithm to find the best prospects within a wide population.
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Interest Targeting
An ad targeting method that serves ads to users based on their declared or inferred interests, such as fitness, cooking, or fashion.
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Behavioral Targeting
An ad targeting method that uses past user behavior — purchase history, browsing patterns, app usage — to serve relevant ads based on demonstrated actions.
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Contextual Targeting
An ad placement strategy that matches ads to the content environment they appear in, rather than targeting based on user data or behavior.
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Native Advertising
Advertising that matches the form, feel, and function of the content environment in which it appears. Native ads are designed to feel like part of the platform, not an interruption.
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In-Feed Ad
An ad that appears within the main content feed of a social platform, positioned between organic posts. It adopts the same visual format as surrounding content.
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Story Ad
A full-screen vertical ad that appears between users' Stories on platforms like Instagram, Facebook, and Snapchat. Stories ads auto-advance after a set duration.
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Spark Ad
A TikTok ad format that lets brands boost existing organic posts — either their own or a creator's — as paid advertisements while preserving the original post's engagement.
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Whitelisting
The practice of running paid ads through a creator's social media account rather than the brand's own account, leveraging the creator's identity and audience trust.
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Dark Posting
Publishing an ad that does not appear on the brand's organic feed. Dark posts are only visible to the targeted audience, allowing brands to test messaging without cluttering their profile.
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Ad Creative
The combination of visual, audio, and textual elements that make up an advertisement. It encompasses the video, image, copy, and design that the audience experiences.
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Visual Hook
The opening visual element of a video ad designed to capture attention within the first one to three seconds. It must create enough curiosity to stop the scroll.
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Pattern Interrupt
A creative technique that breaks the viewer's autopilot scrolling behavior by introducing something unexpected — a surprising statement, unusual framing, or jarring visual contrast.
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Social Proof
The psychological phenomenon where people look to others' actions and opinions to guide their own decisions. In advertising, it manifests as reviews, testimonials, and usage statistics.
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Urgency
A persuasion technique that creates time pressure to motivate immediate action — limited-time offers, countdown timers, or expiring deals.
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Scarcity
A persuasion principle that increases perceived value by emphasizing limited availability — low stock, limited edition, or capacity constraints.
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Objection Handling
The practice of proactively addressing common concerns, doubts, or hesitations that prevent a prospect from purchasing. Effective ads anticipate and resolve objections before the CTA.
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Call to Action
The specific instruction telling the viewer what to do next — click the link, use the code, visit the site. A strong CTA is clear, specific, and creates momentum.
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Landing Page
The web page a user arrives at after clicking an ad. An optimized landing page matches the ad's message and provides a seamless path to conversion.
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Post-Click Experience
Everything a user encounters after clicking an ad — the landing page, load speed, messaging continuity, and checkout flow. It determines whether a click becomes a conversion.
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Attribution
The process of identifying which marketing touchpoints contributed to a conversion. Attribution models range from simple last-click to complex multi-touch systems.
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Clear definitions for ad teams
Advertising has its own language. CPM, ROAS, CTR, hook rate, thumb-stop, creative fatigue — these terms matter because they determine how you evaluate ad performance and make budget decisions. Each definition here is written for ecommerce teams, with context on how it relates to podcast-style ad creative.
Common questions
Clear answers to help you decide if podcast-style ads are worth testing.
Who is this glossary for?
Ecommerce brands, agencies, and media buyers who need clear definitions of advertising terms — especially as they relate to creative testing and podcast-style ads.
Are these definitions specific to podcast ads?
The definitions are standard advertising terms, but each includes context on how it applies to podcast-style ad creative and testing workflows.
Explore the cluster, then create the ads.
Use these pages to find the angle that matches your workflow, then start generating podcast-style creative inside Podcads.