While hunting and gathering cloud-related white papers, I found a nice collection of our Windows Azure white papers:

• A Developer’s Guide to Service Bus for the Windows Azure Platform AppFabric
• Alinean TCO Case Study – Whitepaper
• An Introduction to Windows Azure Platform AppFabric for Developers
• Cloud Economics
• Cloud Optimization – Expanding Capabilities, while Aligning Computing and Business Needs – A Framework for Making Business Decisions About Cloud Computing
• Cloud Platform for Business Leaders
• Custom E-Commerce (Elasticity Focus) Application Migration Scenario
• Customer Web (Rapid Scaling Focus) Application Migration Scenario
• Cloud Optimization – Expanding Capabilities, while Aligning Computing and Business Needs – A Framework for Making Business Decisions About Cloud Computing
• Introducing Windows Azure
• Introducing the Windows Azure Platform
• IT as a Service
• Security Best Practices for Developing Windows Azure Applications
• System Integrator Whitepaper
• The Windows Azure Programming Model
• Windows Azure AppFabric Overview
• Windows Azure Blob – Programming Blob Storage
• Windows Azure Drive Whitepaper – Using a Durable Drive for Your NTSFS Cloud Applications
• Windows Azure: How Four Groups at Microsoft Developed Scalable, Efficient Applications That Unleashed Competitive Differentiators and Delivered High Value to Customers
• Windows Azure Marketplace DataMarket
• Windows Azure Queue – Programming Queue Storage
• Windows Azure Security Overview
• Windows HPC Server and Windows Azure

For more whitepapers, see the Windows Azure Home at http://www.microsoft.com/windowsazure/whitepapers/default.aspx

If you know of some great Windows Azure or cloud-related whitepapers, please share in the comments.