When a user visits a less secure Web site defined by an enterprise administrator, this extension redirects the user toWindowsDefender Application Guard for Microsoft Edge.
In Edge's isolated session, users can navigate to any site, but there is no risk to the rest of the PC. If a user attempts to go to an enterprise site in an isolated Microsoft Edge session, the user is brought back to the default browser.
The new Windows Defender Application Guard extensions for Google Chrome and Mozilla Firefox are available on SKUs with the latest updates of Windows 10 Professional, Enterprise and Education, while the operating system version requires 1803 and higher.
Learn more about:Https://www.microsoft.com/security/blog/2019/05/23/new-browser-extensions-for-integration-microsofts-hardware-based-isolation/