It is also worth point out you can add up to 8 developer accounts (now seems to be 4?) under bizspark programme and the $150 credit is per developer, so the total saving for 3 yrs is up to $43200 (crazy?)

Also, you can enjoy additional discounted hourly rate for up to 33%, aws/google can't compete with that.

[1] http://spiffy.sg/startup/how-to-maximize-and-activate-your-b...

[2] http://www.windowsazure.com/en-us/offers/ms-azr-0057p/