GraphQL is a query language and runtime for APIs that replaces fixed REST endpoints with a single, strongly typed endpoint where clients specify exactly the data they need. Netofficials builds production-ready GraphQL APIs using the Schema Definition Language (SDL) to establish a precise, versioned contract between client and server—covering greenfield builds, REST-to-GraphQL migrations and GraphQL layers added over existing data sources.
Unlike REST, where each resource lives at its own URL and returns a fixed payload, a GraphQL API exposes one endpoint. Clients send queries, mutations or subscriptions that name the fields they want. The server validates each request against the type system, resolvers fetch only the requested data, and introspection lets front-end teams explore the schema without reading separate documentation. This eliminates over-fetching and under-fetching, which matters most for mobile apps operating under bandwidth constraints and for products serving multiple front-end clients with different data needs.
GraphQL is the right choice when a product has several consumers—web, iOS, Android, third-party partners—that each need different data shapes from the same backend, or when a team is aggregating data across microservices. Apollo Federation and schema stitching let distributed teams own separate subgraphs while exposing a unified API to consumers. REST remains appropriate for simple CRUD services, public APIs where HTTP caching is critical, or teams without the tooling to support a GraphQL runtime. Our REST and GraphQL API development services cover both, and our Node.js backend development for GraphQL APIs underpins most Apollo Server and GraphQL Yoga implementations we deliver.