Your designer wants to review the latest app changes, but they cannot simply run flutter run. Your product manager wants to tap through a feature before it is merged, and QA wants to validate a flow on a real device without waiting for a full release pipeline. Flutter Go was built to solve this exact collaboration problem: build the app, share a QR code, and let teammates instantly open and test it on their own devices.

In this talk, I will show what it took to make that workflow possible. We will look at why standard Flutter tooling was not enough, what assumptions the Flutter engine makes about building and running apps, and how we modified parts of the engine and worked with the Dart VM to create a faster iteration loop for the whole team.