APIs can be overwhelming due to the numerous data sources and authentication methods involved, but GraphQL offers a more manageable approach by allowing developers to specify exactly what data they want and get it in one request, making it easier to reason about an API programmatically. This enables frontend-driven data selection and composable APIs, empowering developers to have more control over their data. GraphQL's schema is the core part of every API, and with a unified version of this data, developers can stitch together multiple APIs into a single mashup, simplifying the process of integrating different services.