In this talk, we'll explore various aspects of Hancture's mediator architecture, emphasizing its importance for a successful application. We'll begin by examining the current project requirements of the MapService team at Uklon, including the unique and common features of our applications and the challenges we face in developing them. After that, we'll analyze existing architectures, their components, and their compliance with the requirements. We'll delve into the key challenges associated with existing architectures and discuss ways to overcome them.