At the core of our website and business is Web Browser (and bot!) detection. Here you can find some tutorials and information about some of the things we've learn about browser detection.
Client Hints are a brand new technology in web browsers which allow web browsers to give "hints" to web servers about their capabilities as well as other things like which web browser it is and the operating system that it's running on.
The team at WhatIsMyBrowser.com is watching the development of Client Hints closely and are producing articles and guides to help other web developers and sys-admins learn about Client Hints and harness their new capabilities. Learn about Client Hints.
User Agents are the original way that developers and sys-admins determined the web browsers and bots accessing their sites. Here you can find some information about browser detection using using User Agent strings.