Marketing & Advertising Glossary
From CPM to programmatic, every term in advertising and media buying explained in plain English.
Private Marketplace (PMP)
BuyingA private marketplace (PMP) is an exclusive, invitation-only auction where publishers offer premium ad inventory to selected advertisers at negotiated prices.
Programmatic Guaranteed
BuyingA direct media buying agreement where an advertiser reserves guaranteed ad inventory at a fixed price, combining programmatic efficiency with traditional guaran
Real-Time Bidding (RTB)
BuyingAn automated auction system where advertisers bid in real-time for individual ad impressions, with winning bids displayed instantly to users.
Retargeting
AudienceRetargeting shows ads to users who've previously visited your website or engaged with your brand, keeping you top-of-mind as they browse elsewhere online.
ROAS
MetricsROAS measures how much revenue you generate for every pound spent on advertising.
Return on Ad Spend (ROAS)
MetricsReturn on Ad Spend (ROAS) measures revenue generated for every pound spent on advertising. It's a key performance indicator for evaluating campaign profitabilit
Rich Media Ad
BuyingInteractive digital advertisements with embedded video, animation, or user engagement features that go beyond static display ads to capture attention and drive
Search Impression Share
MetricsThe percentage of eligible impressions your ads received out of the total available in the market. A key metric for understanding search campaign reach and comp
Supply Path Optimisation (SPO)
BuyingA programmatic strategy that identifies and prioritises the most efficient digital advertising paths to reach target audiences, reducing waste and improving ROI
Supply-Side Platform (SSP)
BuyingA technology platform that helps publishers and content owners sell their advertising inventory automatically to buyers, maximising revenue through real-time bi
VAST Tag
BuyingVAST Tag is an XML-based code snippet that enables programmatic video ad serving, allowing advertisers to dynamically insert ads into video inventory across mul
VPAID Tag
BuyingA JavaScript tag that enables interactive video ads to communicate with ad servers, allowing real-time tracking and dynamic creative control during playback.
View-Through Conversion
MetricsA conversion that occurs after a user views a display ad but doesn't click it, then later completes a desired action like a purchase or signup.
Viewability
MetricsThe percentage of ad impressions that are actually visible to users on screen. A key metric for measuring campaign effectiveness and ensuring media spend delive
Win Rate
MetricsWin rate measures the percentage of pitches, bids or campaigns your agency successfully wins against competitors.
eCPM
MetricseCPM (effective cost per thousand impressions) measures the revenue generated per 1,000 ad impressions, helping publishers and advertisers optimise campaign pro