This talk was presented during the React Native EU 2021 - the largest community conference in the world focused exclusively on React Native. Abstract: Microsoft is big. Like, REALLY BIG. This means 100s of engineers working in their huge monorepos, and React Native experiences being thrown around across them... how can this even work? How do you improve, coordinate, remove frictions for so many codebases? In this talk, we will dive a bit deeper on the technical side to present you some of the unique challenges we face at the MS scale, and introduce you to some of our custom tooling – who knows, maybe it will be helpful for you too? About Tommy: Tommy is a Software Engineer at Microsoft who has shipped React Native based experiences within existing Microsoft apps and are now focussing on tooling and making the developer experience better for everyone. Twitter: https://twitter.com/lord_sherlock GitHub: https://github.com/tido64 Additional links: You can find react-native-test-app here: https://github.com/microsoft/react-native-test-app And RNX-KIT here: https://github.com/microsoft/rnx-kit (dep-check is in the /packages folder) If you want to check out for yourself the slides material, the slides are here: https://speakerdeck.com/kelset/improve-all-the-repos-exploring-microsofts-devexp the demos' steps are listed here, along with the demo monorepo used in the second one: https://github.com/tido64/rneu-demo the PR to migrate RN-webview to RNTA here: https://github.com/react-native-webview/react-native-webview/pull/2148