Prime Video delivers content to millions of customers, all over the world, on a variety of devices such as: game consoles, set-top boxes, streaming sticks, and Smart TVs. These devices have a vast range of hardware capabilities and performance characteristics. We’ll also show how we’ve used WebAssembly and Rust to improve the performance, updatability and stability of the Prime Video app. This presentation will also give a tour of the architecture that makes it possible to deploy the same application on all of these devices.