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How Microsoft is using GraphQL in their new Teams architecture

Microsoft has made a significant investment in the re-architecture of its Microsoft teams desktop client, which is available in preview at the moment of writing this post.

Although there are a lot of great improvements in the new Teams I want to focus on the new technical architecture which they shared in this post: Microsoft Teams: Advantages of the new architecture.

What I found really interesting is how they brought GraphQL into the mix:

If you look at the schema above, notice the Client Data Layer on the right. This layer is hosted inside a Web Worker and used to overcome the single-threaded nature of JavaScript. It enables functionality like data fetch, data storage, push notifications, and offline functionality(through Index DB) and all this running on parallel threads.

The Teams window(using WebView2) is abstracted from the client data layer through GraphQL. I think this is a use case where I wouldn’t have thought about this technology myself but it is a great example of the versatility and power of this technology.


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