A UBS research report sparked a lot of discussion this week with its estimate that Amazon Web Services’ total revenue will top $500 million this year and $1.1 billion by 2014. Even if the numerical estimates aren’t entirely quantifiable, stated growth from other cloud providers suggests UBS’s estimated growth curve for AWS is probably accurate. This week, for example, RightScale announced a 1,000 percent customer spending increase from June 2009 through June 2010. Aside from consistent cloud-based revenue growth, its cloud customer count almost doubled between the first quarters of 2009 and 2010 — from 43,030 to 80,080.