Marketing & Advertising Glossary
From CPM to programmatic, every term in advertising and media buying explained in plain English.
HTTP/2 vs HTTP/3
Landing PagesHTTP/2 and HTTP/3 are protocols that govern how browsers load web pages. HTTP/3 is faster and more reliable, especially on mobile and unstable connections.
Hashtag Strategy
Social MediaA planned approach to selecting and deploying hashtags across social media campaigns to improve discoverability, reach, and audience engagement.
Header Bidding
BuyingA programmatic advertising technique where publishers offer ad inventory to multiple demand sources simultaneously before making server-side decisions, increasi
Headless CMS
WordPressA CMS architecture that separates content management from presentation, allowing content to be delivered across multiple channels and devices independently.
Helpful Content System
Answer Engine OptimisationGoogle's framework for evaluating content quality based on helpfulness, experience, and relevance. Critical for AEO success and search visibility.
Hero Image
Campaign ArtworkA large, visually dominant image used as the primary focal point in digital and print campaigns to immediately capture audience attention.
Hi-Res PDF/X-1a
Print & PublishingA standardized PDF format designed for high-quality print production, ensuring colour accuracy and reliable file handoff between agencies and printers.
Holdout Group
AttributionA control group excluded from a marketing campaign to measure its true incremental impact by comparing their behaviour against exposed audiences.
Hook Rate
Social MediaThe percentage of viewers who watch the first 3 seconds of a video before scrolling past. A critical metric for social media performance.
Host-Read Ad
PodcastsAn ad read by a podcast host in their own voice during the show, creating authentic endorsement that feels like a personal recommendation to listeners.
Hreflang Tags
Technical SEOHTML tags that tell search engines which language version of a page to display to users in different regions or speaking different languages.
Hub & Spoke Model (Content)
Blog ContentA content distribution strategy where a central hub of pillar content branches into multiple spoke pieces targeting specific audiences or channels across your m
Hugging Face
AIHugging Face is an open-source AI platform providing pre-built language models and tools for natural language processing tasks in marketing applications.