GraphQL

GraphQL is an open-source query language for APIs and a runtime for fulfilling those queries with existing data. It allows clients to request exactly the data they need, no more and no less, making it an efficient alternative to traditional REST architectures.

It is used by developers to build flexible and powerful APIs, enabling clients to define the structure of the data they require. GraphQL is suitable for teams building complex applications that need to interact with various data sources and for those seeking to optimize data fetching and reduce over-fetching or under-fetching of data.