To meet the application security requirements, which two authentication methods must the applications support?

https://docs.microsoft.com/en-us/azure/active-directory/app-proxy/application-proxy-configure-single-sign-on-on-premises-apps

https://docs.microsoft.com/en-us/azure/active-directory/app-proxy/application-proxy-configure-single-sign-on- with-kcd

https://docs.microsoft.com/en-us/azure/active-directory/app-proxy/application-proxy-co nfigure-custom-domain