An article with 10 points of note about AWS:
Amazon Web Services just held a powwow for potential enterprise customers and a bevy of details emerged, ranging from contracts to security to procedures ensuring that employees don’t procure a cloud server en masse for giggles. Here’s a reporter’s notebook from Amazon Web Services’ enterprise powwow.
This point, in particular, is one to watch:
2: Watch your budget when you move to AWS
A handful of AWS customers said that cloud computing is less expensive but can be too easy to use and blow your budget. Simply put, any developer with a credit card can provision a machine. If too many people use AWS, you have cloud sprawl quickly and blow your computing budget. “It’s too easy and that can hurt your cost controls,” Dispensa said. “It’s cheaper, but can get unwieldy.”
For my hobby sites, my math showed I’d get everything I need from a basic Hostgator plan for a fraction of the cost of an always-on small Linux instance.