Apollo Connectors is a system that enables declarative API development by allowing developers to declare the data and capabilities of existing APIs, making it easier to orchestrate requests. The system uses GraphQL directives to implement fields, which can be connected to backend services using HTTP endpoints. Apollo Connectors extend the declarative approach of GraphQL, aligning with other systems like Kubernetes and Docker. They provide a way to automatically orchestrate API calls, reducing the need for Back-End For Frontend (BFF) solutions. The system is designed to work seamlessly with existing subgraphs and can be used with various types of APIs, including HTTP/JSON APIs and RPC implementations. Connectors are now generally available and ready for production use, offering a free tier and a community forum for support and sharing experiences.