'Open Cloud Manifesto' is a manifesto that lays out a number of principles for open cloud computing, reportedly setup by a group of Web service providers, IBM inclusive. However, the biggest names in the field, say they aren't signing on. Microsoft and Amazon in a blog post clearly opted out of the group.

Amazon said in a statement, Friday night: "Ideas on openness and standards have been talked about for years in Web services. And we do believe standards will continue to evolve in the cloud-computing space. But what we've heard from customers thus far, customers who are really committed to using the cloud, is that the best way to illustrate openness and customer flexibility is by what you actually provide and deliver for them."

While, Microsoft on its part, objected to the fact that it was shown the document just last weekend, not allowed to make changes, and given just 48 hours to decide whether to sign. In the blog post, Microsoft's Steven Martin commented, "What we heard was that there was no desire to discuss, much less implement, enhancements to the document, despite the fact that we have learned through direct experience. Very recently, we were privately shown a copy of the document, warned that it was a secret, and told that it must be signed 'as is,' without modifications or additional input."

Martin wrote that "it appears to us that one company, or just a few companies, would prefer to control the evolution of cloud computing, as opposed to reaching a consensus across key stakeholders (including cloud users) through an 'open' process."

Reuven Cohen, a notable proponent announced in the Google Group Post, that the first version of the manifesto which will be published Monday, March 30th with a goal of being ratified by the greater cloud community.