Microsoft has released a browser extension called Application Guard that protects Chrome and Firefox enterprise users from untrusted sites by opening them in a sandboxed Edge environment. For non-Enterprise users, you gain no additional benefit from installing this extension. Windows will be protected from web site exploits or malicious scripts as they will be unable to makes any changes outside of the sandbox. The extension can also be used in standalone mode, which means using it without Network isolation policies, to launch a sandbox environment.
Source: https://www.bleepingcomputer.com/news/security/microsofts-application-guard-extension-protects-chrome-and-firefox-users/