A headless CMS separates editing from rendering, which is how a site stays sub-second fast while non-technical staff publish freely. It earns its place once content changes weekly; below that, well-structured content files edited at deploy time are simpler and free.
The pitch is real: editors get a clean dashboard, the site ships as pre-rendered static pages, and the plugin-security treadmill disappears. The nuance is that the value scales with publishing frequency, not with company size.
A firm posting weekly case studies and articles feels the benefit daily. A firm whose site changes quarterly is paying setup and subscription for a dashboard nobody opens.
The staged path
Launch with structured content in the codebase, typed and versioned, which costs nothing and keeps every option open. Wire the CMS when a real cadence emerges, and design the schema so the swap needs no page rewrites.
This is also the architecture that keeps AI-readability intact: the same structured content feeds your pages, your schema and your llms.txt from one source of truth.