If you didn’t attend the PDC session The Business of Windows Azure: What you should know about Windows Azure Platform pricing and SLAs I would recommend you to watch it, it really helps to understand the pricing and license model.
Additionally it also helps to understand the value of Cloud computing and being more precisely Azure.
Linked with my previous post Auto-scaling in Azure, I wanted to talk about the most common workload patterns.
Identifying your service workload pattern helps you to maximize the compute capacity utilization and reducing TCO.
As I described in the post Auto-scaling in Azure you can dynamically grow or decrease your service compute capacity.So you could schedule the computing capacity of your service according to the workload pattern.