# Introduction to GraphQL GraphQL is a query language for APIs that gives clients the power to request exactly the data they need, no more and no less. ## Core Benefits - **Flexibility**: Fetch multiple resources in a single call. - **Strong Typing**: Define a strict schema to avoid data mismatch. - **Efficient**: Reduce overfetching and improve performance.
## Example Query ```graphql query { user(id: "123") { name email posts { title content } } } ``` In a single query, request only the necessary fields, making GraphQL a powerful alternative to traditional REST APIs.