Explanation/Reference:
Explanation:
Box 1: Active Directory Federation Services (ADFS)
The well-known HTTP basic authentication that you can use in scenarios such as Exchange Active Sync (ActiveSync). This is a new capability included in this release of Web Application Proxy. For the ActiveSync scenario, the authentication process includes four core steps:
Windows Application Proxy (WAP) stops the request and passes all credentials to AD FS.

AD FS validates, applies policy, and replies with a token.

Upon success, Web Application Proxy allows the request to pass to the Exchange server.

Web Application Proxy caches the token for future use.

Box 2: HTTP Basic
The well-known HTTP basic authentication that you can use in scenarios such as Exchange Active Sync (ActiveSync).