On your list of places where people might access your web app, Teams is probably number “not-on-the-list”. But it turns out that making your app accessible where your users are already working has some profound benefits. In this article, we’ll look at how Teams makes web apps a first-class citizen, and how it enables you to interact with those apps in completely new ways. 

https://smashingmagazine.com/2021/02/port-web-app-microsoft-teams/