Building an app from scratch is a challenging process, and when your app manages slow devices, that process is even more complicated. With so much competition, you need to make sure your app is optimized for success. In this session, we will show you what tools are used for communication with home gateways and how to use them. We'll go over performance, why it's important, and what metrics you should pay attention to, as well as share our experience and guides on how to overcome challenges that we faced both on the frontend and backend and build a fast app while dealing with challenging slow home gateways.