Msdn subscribers can use Microsoft cloud computing for free

Windows Azure is an internet-scale cloud computing and service platform hosted in Microsoft data centers. The platform provides a series of functions to help build various applications from consumer Web to Enterprise SolutionsProgram. Msdn subscribers can use this platform to build and deploy their own applications at no extra cost, as shown in the following table for free:

Subscription-level services (no additional charges)*		Premium, ultimate, and Bizspark
Windows azure	Small computing instance	750 hours/month
	Storage	10 GB
	Transactions	1,000,000/month
Appfabric	Service Bus connection	5/month
	Resource Access Management transaction	1,000,000/month
SQL azure	Web edition Database (1 GB)	3
Data Transmission	Europe and North America	7 GB incoming/month 14 GB outgoing/month
	Asia Pacific	2.5 GB incoming/month 5 GB outgoing/month

Microsoft officially said windows azure's msdn benefits are expected to be worth about $1,800 a year.

Your credit card is required for registration. If your service usage exceeds the service volume of your msdn subscription, we will charge you an additional fee for your credit card. You can view your usage at any time on the Microsoft Online Services Customer Portal.

* You can now register in the listed countries/regions. Unavailable for empower for isV members; limited to three technical contacts of certified partners and gold certified partners.

You can refer to the video on chennel9:

Http://channel9.msdn.com/Blogs/Abe+Pachikara/MSDN-Azure-Benefits-How-To-1-of-3-6-mins