AWS Directory Service
Administration Guide (Version 1.0)

Use Case 4: SSO to Office 365 and Other Cloud Applications

You can use AWS Managed Microsoft AD to provide SSO for cloud applications. You can use Azure AD Connect to synchronize your users into Azure AD, and then use Active Directory Federation Services (AD FS) so that your users can access Microsoft Office 365 and other SAML 2.0 cloud applications by using their AD credentials.