Glossary
Paid Media & Ad Operations
Ad fatigue
The decline in an ad's effectiveness that occurs when an audience has been exposed to it too many times, becoming less responsive even though the underlying targeting and offer haven't changed.
Ad rank
The overall score that determines an ad's position in an auction-based ad platform, typically calculated from a combination of bid amount, quality score, and other contextual signals.
Attribution model
The specific rule set used to assign credit for a conversion across multiple marketing touchpoints a customer interacted with before converting — common models include first-touch (all credit to the first interaction), last-touch (all credit to the final interaction before conversion), and multi-touch (credit distributed across several touchpoints according to a defined weighting).
Bid / Bidding
The amount an advertiser offers to pay for a specific ad placement or action, in an auction-based advertising system where multiple advertisers compete for the same inventory.
Cookie
A small piece of data stored in a web browser by a website, used to remember information about a visitor — login state, preferences, or browsing behavior for tracking and advertising purposes.
DSP (Demand-Side Platform)
Software that allows advertisers to buy digital ad inventory programmatically across multiple ad exchanges and publishers from a single platform, using automated bidding.
Dayparting
The practice of scheduling ads to run only during specific hours or days, based on when the target audience is most likely to be active, engaged, or ready to convert.
First-party data / Third-party data
First-party data is information a company collects directly from its own customers or audience (through its own website, app, or CRM). Third-party data is information collected by an outside company, not the one using it, typically aggregated and sold or licensed for advertising targeting purposes.
Frequency cap
A limit set on how many times a single user can be shown a specific ad within a defined period, to prevent the same person from seeing the same ad excessively.
Impression share
The percentage of times an ad was actually shown, out of the total number of times it was eligible to be shown, given its targeting and budget — a measure of how much of the available opportunity an advertiser is actually capturing.
Incrementality testing
An experimental method for measuring the true additional impact of a marketing activity by comparing outcomes between a group exposed to it and a similar control group that wasn't, isolating what actually happened *because* of the marketing versus what would have happened anyway.
Marketing mix modeling (MMM)
A statistical analysis technique that estimates the impact of different marketing channels and activities on overall business outcomes (like sales or revenue), using aggregate historical data rather than individual-level tracking.
Multi-touch attribution (MTA)
An attribution model that distributes credit for a conversion across multiple touchpoints in a customer's journey, rather than assigning all credit to a single interaction (like the first or last touch).
Native advertising
Paid content designed to match the look, feel, and format of the platform or publication it appears on, blending in with organic, non-paid content rather than appearing as a visually distinct advertisement.
Negative keyword
A keyword an advertiser specifically excludes from triggering their ad, preventing the ad from showing on searches containing that term, even if the term is otherwise related to the advertiser's targeted keywords.
Pixel (tracking pixel)
A small piece of code embedded on a webpage or in an email that fires a signal back to an advertising or analytics platform when triggered — commonly used to track conversions, page views, or specific user actions.
Programmatic (advertising)
The automated buying and selling of digital ad inventory through software and real-time auctions, rather than through direct, manually negotiated deals between an advertiser and a publisher.
Quality score
A rating (used prominently in Google Ads) assessing the relevance and expected performance of a keyword, ad, and landing page combination, which directly affects both the cost of a bid and an ad's eligibility to show in auctions.