Abstract: Systems built with microservices tend to become complex over time. There are several approaches that encapsulate complex distributed system layouts with an API Gateway, or backends for frontends. Having a GraphQL gateway is one of the available options. This method of delivering client-facing APIs has become the standard with modern single-page applications. Bio: I'm a Python developer from Poland, working at Mirumee Software. In my daily work I focus on web APIs development, using modern frameworks like FastAPI, I'm an enthusiast of clean architecture and solving complex problems in a simple, elegant way.