If you currently have an MSDN account (paid for or a Bizspark account), then you should be taking advantage of the 750 free compute hours you get each month. Just look at your subscriber benefits.

However if you still haven’t been able to give Windows Azure a try, you are now able to get a 30 day free trial https://blogs.technet.com/b/webtech/archive/2010/11/24/it-s-back-30-days-windows-azure-platform-no-credit-card-required.aspx

By David Burela