What is GraphQL used for? GraphQL is a query language (that's what the “QL” stands for) for APIs and a runtime for fulfilling those queries with your existing data. Basically, it is used to load data from a server to a client -- it's a way to get data from an API into your application. React. js is an open-source JavaScript library that is used for building user interfaces specifically for single-page applications. It's used for handling the view layer for web and mobile apps. React also allows us to create reusable UI components. ... The main purpose of React is to be fast, scalable, and simple React Apollo allows you to fetch data from your GraphQL server and use it in building complex and reactive UIs using the React framework. React Apollo may be used in any context that React may be used. In the browser, in React Native, or in Node. js when you want to do server-side rendering. Apollo Server is an extensible, open-source JavaScript GraphQL server. With it, you can define: A GraphQL schema that specifies all of the types and fields available in your graph. A collection of resolvers that specify how to populate each field of your schema with data from your back-end data sources. The useLazyQuery hook is perfect for executing queries in response to events other than component rendering. This hook acts just like useQuery , with one key exception: when useLazyQuery is called, it does not immediately execute its associated query. Should I use Apollo GraphQL? Why you should really think of adopting GraphQL for 2019 But GraphQL is just a query language. And in order to use it easily, we need to use a platform that will do all the heavy lifting for us. ... The Apollo platform is an implementation of GraphQL that can transfer data between the cloud (server) to the UI of your app