Headless CMS

Definition
A content system that delivers via APIs without a fixed front end.
Advanced
Content is modelled once and consumed by multiple clients such as websites, apps, and kiosks. Supports static generation or server rendering, webhooks, previews, and role-based access.
Why it matters
Enables multi-channel publishing, developer flexibility, and performance.
Use cases
- Website and mobile app share one content source
- Multi-language and multi-region delivery
- Migration away from monolithic CMS
Metrics
- Time to publish
- Build or render time
- API latency and error rate
Issues
- Poor content models that limit reuse
- Missing preview or publishing workflow
Example
Payload CMS serving a Next.js site and a React Native app through REST or GraphQL with preview and webhooks.