If you followed the information delivered by Microsoft during TechEd NA 2013, you must be aware that Microsoft renamed Windows Azure Service for Windows Server to Windows Azure Pack.
The Windows Azure Pack is a collection of Windows Azure technologies available to Microsoft customers at no additional cost. Once installed in your datacenter, the Windows Azure Pack integrates with System Center and Windows Server to help provide the following capabilities:
- Management portal for tenants
- Management portal for administrators
- Service management API
- Web Sites
- Virtual Machines
- Service Bus *New Feature*
- Automation and extensibility *New Feature*
Microsoft published a few days ago a white paper called: Overview of Windows Azure Pack.
You could download it via the following link: