How does one determine what to charge? . . . getting your website known? . . . determining if you really have a product people want?
The last question is easiest. Instead of building a product and then trying to figure out if people want it, why not build something that people want and then build something that meets that need?
There are a slew of cloud providers out there, all providing different "cloud solutions". Some are application as a Service(Salesforce.com and some Google apps, for example). Others are Platform as a Serivce (Amazon, Azure, Google), Infrastructure as a Service, and so on. The key is that you are delivering a service to clients over the Internet, that they are paying on a metered basis based on utilization/consumption, that you have capacity to elastically scale out when need and snap back when capacity is not needed, etc.
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