Glossary Term

What is Headless CMS? — UK Software Development Guide

4 min readJune 2025ClickMasters Technical TeamReviewed by James Whitmore, CTO

what is a headless cms

Direct Answer

A headless CMS (Content Management System) is a backend-only content management system that stores and manages content but does not control the presentation layer. Content is delivered via API to any frontend — website, mobile app, digital signage, or any other platform. This is "headless" because the "head" (the presentation layer) is separated from the "body" (the content repository).

UK Context

Headless-cms in the UK

Headless CMS is increasingly used in UK eCommerce, media, and enterprise software. UK use cases: Next.js frontend + Contentful/Sanity/Strapi headless CMS is a common UK stack for content-heavy websites. Headless commerce architecture (headless Shopify + custom React frontend) is growing in UK retail. UK GDPR consideration: personalisation using content from a headless CMS that tracks individual user behaviour requires a valid legal basis (legitimate interest or consent). The ICO's recent guidance on cookie consent applies to personalisation features.

Explore More

Related Glossary Terms

React

React.js explained for UK software developers. React (also known as React.js or ReactJS) is an open-source JavaScript library developed by Meta (formerly Facebook) for... UK context and related services.

Read Definition

Typescript

TypeScript explained for UK software developers. TypeScript is a programming language developed by Microsoft that adds static type definitions to JavaScript. TypeScript ... UK context and related services.

Read Definition

Load-testing

Load Testing explained for UK software developers. Load testing is the practice of testing a software system under expected and peak load conditions to understand its perf...

Read Definition