In a headless application, REST and GraphQL APIs act as the bridge between the backend and frontend, letting the presentation layer fetch data independently. REST offers simple, resource-based endpoints ideal for straightforward data needs, while GraphQL allows precise, single-request queries that reduce over-fetching. Together, they give developers flexibility to build fast, scalable interfaces across web, mobile, and IoT platforms. This API-driven approach is central to modern headless development, enabling teams to innovate on the frontend without touching backend logic.
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