FAST Search - What is it and why is it mentioned with Sharepoint?

I've heard about FAST Search recently and trying to make sense of it. Whenever I read about it , Sharepoint is mentioned.

Is this a separate product? How is it related to Sharepoint?

I am interested in learning more about it. Where can I find learning resources for it outside of Sharepoint context?

Thanks

Solution

SharePoint's enterprise search offering was non-existent, and there was this really nice product called FAST ESP that Microsoft liked the look of, so they bought the company. When SharePoint 2010 came out they made the connection a little easier to configure, and gave it a SharePoint admin UI.

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