A headless CMS separates content management from content presentation. Editors write and organize content in a dedicated backend. Developers fetch that content through APIs and render it however they want, on a website, in a mobile app, on a digital kiosk, or across all three simultaneously. This architecture has replaced traditional monolithic CMSs like WordPress for most serious projects we build, and for good reason.
But the headless CMS market has exploded. There are over 80 options. Choosing the wrong one costs months of migration work. After implementing content systems across dozens of client projects through our full stack development practice, we have strong opinions about what works and what does not.
Why Headless CMS Over Traditional CMS
Traditional CMSs like WordPress couple your content to a specific rendering engine. Your content lives in a database optimized for that CMS, your templates are written in that CMS's language, and your frontend is constrained by that CMS's theme system. This was fine when websites were the only delivery channel.
Today, the same product description might appear on a Next.js website, a React Native mobile app, an email campaign, and a partner's embedded widget. With a traditional CMS, you either duplicate content across systems or build fragile scraping layers. With a headless CMS, every channel pulls from the same content API.
We wrote a detailed comparison of custom websites vs WordPress that covers the broader tradeoffs. For content heavy applications, the headless approach wins on flexibility, performance, and long term maintainability.
Performance is the other major advantage. Traditional CMSs generate pages on the server for every request (or use complex caching layers to avoid it). Headless CMSs serve content through CDN backed APIs, and your frontend can be statically generated or incrementally regenerated. The sites we build on headless CMS architectures consistently load in under 1 second, because the content is pre fetched at build time and served from edge locations.
The Major Players and When to Choose Each
Sanity
Sanity is our default recommendation for most projects. The content model is defined in code (JavaScript/TypeScript), which means it lives in version control, gets code reviewed, and deploys through your CI pipeline. The real time collaborative editing experience is excellent, comparable to Google Docs. GROQ, their query language, is more intuitive than GraphQL for content queries.
Choose Sanity when: You need flexible content modeling, your team is comfortable with code defined schemas, and you want real time collaboration for editors. Pricing is generous, the free tier covers most startups and small businesses.
Avoid Sanity when: Your editors are non technical and need a simpler, more opinionated interface. Sanity's Studio is customizable but requires developer time to configure well.
Contentful
Contentful is the enterprise incumbent. It has the deepest integration ecosystem, the most mature localization support, and the compliance certifications (SOC 2, GDPR, ISO 27001) that enterprise procurement teams require. Content modeling happens through a web UI, which non technical teams find more approachable.
Choose Contentful when: You are building for an enterprise client, need advanced localization across 20+ locales, or need to integrate with existing enterprise content workflows.
Avoid Contentful when: Budget is tight. Contentful pricing scales aggressively with content volume and API calls. We have seen clients hit $1,500 per month at relatively modest content volumes that Sanity handles on its free tier.
Strapi
Strapi is the open source option. You self host it, which means full control over your data and no vendor lock in. The admin panel is clean and editors generally find it intuitive. Being open source, you can extend every part of the system.
Choose Strapi when: You need to self host for data sovereignty requirements, want to avoid vendor lock in, or need deep customization of the admin interface.
Avoid Strapi when: You do not want to manage hosting, updates, and database backups for your CMS. Self hosting is operational overhead. If your team does not have strong DevOps capabilities, a managed service is the better path.
Keystatic and MDX Based Approaches
For developer focused sites, documentation, and blogs, sometimes a full CMS is overkill. Keystatic stores content as files in your git repository (Markdown, MDX, JSON, YAML), giving you version control, branching, and pull request workflows for content changes. Your content is plain files, so there is zero vendor lock in and zero API latency.
Choose file based when: Content is primarily authored by developers, the volume is moderate (under 1,000 pages), and you value simplicity over features.
Content Modeling: Where Projects Succeed or Fail
The content model, how you structure types, fields, and relationships, is the most important decision in a headless CMS implementation. Get it wrong and editors struggle, queries become complex, and migrations are painful.
Model content by meaning, not by page layout. A common mistake is creating a content type called "Homepage" with fields that mirror the page design: hero title, hero image, section 1 heading, section 1 body. This breaks the moment your design changes. Instead, model reusable content types: Hero, Feature Block, Testimonial, Call to Action. Pages reference these blocks, and design changes do not require content restructuring.
Use references liberally. If an author appears on blog posts, case studies, and team pages, the author should be its own content type referenced by each, not a set of fields duplicated across types. This eliminates data inconsistency and makes global updates trivial.
Plan for localization from day one. Adding localization to an existing content model is painful. Even if you only support English today, structuring your content types with locale aware fields from the start costs almost nothing and saves weeks of migration work later.
Keep the editor experience in mind. A content model that makes perfect sense to a developer can be confusing to an editor. Group related fields, add clear descriptions, set sensible defaults, and hide technical fields that editors should not touch. We spend significant time on editor experience during CMS implementations because a CMS that editors avoid is a CMS that produces stale content.
Content Delivery Architecture
How you fetch and cache content matters as much as which CMS you choose.
Static generation with incremental regeneration is our default delivery pattern. At build time, all content is fetched and pages are generated as static HTML. When content changes, only the affected pages are regenerated. This gives you the performance of static sites with the freshness of dynamic content. Next.js ISR (Incremental Static Regeneration) and Astro's on demand rendering handle this well.
For pages that need real time content updates (live scores, stock tickers, breaking news), we use stale while revalidate patterns where the CDN serves cached content immediately while fetching fresh content in the background. Users see content that is at most a few seconds old, with zero loading delay.
Webhook driven rebuilds connect your CMS to your deployment pipeline. When an editor publishes content, the CMS sends a webhook to your hosting platform (Vercel, Netlify, or your custom pipeline), which triggers a targeted rebuild. This typically completes in 10 to 30 seconds for incremental updates.
We discussed related performance patterns in our website performance optimization guide. Content delivery architecture is often the single biggest lever for site speed.
Preview and Draft Workflows
Editors need to preview content before publishing. This is where headless CMS implementations frequently fall short, because the content and the presentation are separate systems.
The standard approach is a preview mode in your frontend that fetches draft content instead of published content. The editor clicks a preview button in the CMS, which opens the website in preview mode with a special token. They see exactly how their changes will look before publishing.
Sanity takes this further with visual editing, where editors can click on elements in the live preview and edit them directly, with changes reflected in real time. This narrows the gap between headless CMS editing and the in place editing experience of traditional CMSs.
Migration Strategy
If you are moving from WordPress or another traditional CMS, plan the migration carefully:
1. Audit existing content. Catalog every content type, field, and relationship. Identify content that is active vs. stale.
2. Design the new content model based on actual content needs, not the old system's structure.
3. Write migration scripts that transform and import content. Validate each content type in isolation.
4. Run editors through the new system before cutover. Training and feedback loops prevent post launch confusion.
5. Maintain redirects for every old URL. SEO value built over years disappears without proper redirects.
The decision between building a custom content system vs. adopting a CMS is a specific case of the broader build vs. buy question we have written about. For content management, buying is almost always right, the headless CMS market is mature and the cost of building your own is difficult to justify.
If you are evaluating headless CMS options or planning a migration from a traditional CMS, talk to us about your content infrastructure. We will help you choose the right system and implement it in a way that editors actually enjoy using.