score: Azure Stack: 836 vs OpenStack: 530 points
Microsoft Releases More Azure Stack Details, Available September @ InfoQ
"Azure Stack is an extension of Azure, bringing the agility and fast-paced innovation of cloud computing to on-premises environments. Only Azure Stack lets you deliver Azure services from your organization’s datacenter, while balancing the right amount of flexibility and control—for truly-consistent hybrid cloud deployments.
Read the whitepaper for more details about Azure Stack
Download the Azure Stack datasheetMicrosoft Releases Azure Stack Enabling Hybrid Cloud Among Key Market Levers Versus AWS @ Forbes
Microsoft’s Azure Stack private cloud platform is ready for its first customers | TechCrunch
Azure Stack: Microsoft’s private-cloud platform and what IT pros need to know about it | Network World
Microsoft introduces Azure Stack, its answer to OpenStack | Network World
"Azure Stack will begin shipping in September."