Today at RSA Conference in Europe, Microsoft launched the Cloud Security Reediness Tool. Here how it works:
Go check it out now at: http://technet.microsoft.com/en-us/security/jj554736
Works only for SAAS readiness as the drop down "Select Service Type (IAAS, PAAS, SAAS)" only has SAAS as an option
That's correct for now, IaaS and PaaS are on the roadmap to be included as we review the tool. ETA still to be determined.
Thanks for your feedback.