Apollo Client is a frontend GraphQL integration layer and client library used to fetch, manage, and cache data from a GraphQL server in web and mobile applications. It functions as a state management framework that synchronizes remote server data with local application state.
The project provides a TypeScript wrapper for executing GraphQL queries and mutations, ensuring type-safe API integration with automatic validation and code completion.
The library manages data fetching and synchronization between the backend and the user interface. It includes capabilities for caching GraphQL results locally to reduce network requests and maintaining consistent application state across the frontend.