I Built SaaS Web Application And I Deployed It To Windows Azure, Now What? - Solution Summary For Identity, SSO, Authentication, And Authorization

I am an ISV or entrepreneur

I developed multitenant SaaS Web app.
I deployed it to run on Windows Azure.
I want to let each tenant to authenticate his users with either/and/or Google, Facebook, LiveID, OpenID, Yahoo!, ADFS/AD.

Solution Summary

Use ACS v2.0 for federation with either/and/or Google, Facebook, LiveID, OpenID, Yahoo!, ADFS/AD.
Use ACS v2.0 Management Service for automation when onboarding new tenants.
Use WIF for integrating your Web app with ACS.
Use WIF to implement authorization access checks.
Use code samples to hit the ground running.