GraphQL is a query language and runtime that revolutionizes how applications request and receive data from servers. Unlike traditional REST APIs, where each endpoint returns a fixed set of data, GraphQL allows clients to specify precisely what data they need. This flexibility enables developers to gather multiple data pieces in a single request, minimizing the number of round trips to the server and optimizing performance. With GraphQL, clients have complete control over the data they receive, reducing over-fetching (receiving more data than required) and under-fetching (not getting enough data). It simplifies complex data retrieval, making it easier to build and maintain robust and efficient applications. As a powerful tool in modern web development, GraphQL empowers developers to create more responsive and adaptable user experiences by providing a tailored approach to data queries.