Microsoft have informed us (MVP mail distribution) and also published two excellent guides about their Infrastructure as a Service (Iaas) Product Line Architecture (PLA). The first guide is mostly based on Windows Server 2012 storage and virtualization and the second guide is based around System Center 2012. both document will provide you good idea about Microsoft approach. In future they expect to provide more documents like this and also expecting feedback from you.
- Infrastructure-as-a-Service Product Line Architecture Fabric Architecture Guide (Windows Server 2012)
- Infrastructure-as-a-Service Product Line Architecture Fabric Management Architecture Guide (System Center 2012)
Enjoy the reading during your weekend break