It’s talked about a bit here, along with links to the papers about the architecture.

https://www.microsoft.com/en-us/research/project/project-cat...

We also now have an FPGA accelerated Resnet-50 as a service on Azure with more models in the pipeline. (I work on the Azure Machine Learning side of this stuff)

A quick search on DuckDuckGo for "microsoft bing fpga" turned up the following: https://www.wired.com/2014/06/microsoft-fpga/

(I have not read the article, it just happened to be first result.)

? Literally that's what this post is about