1. IaaS is smoking hot
In the past few months, Google, HP, and Microsoft have announced that they're getting into the IaaS game. Amazon now dominates the space, but can it fend off the invasion of tech giants? Smaller players like Rackspace - now famous for its OpenStack "cloud operating system" - and insurgents like Joyent are also intent on a piece of Amazon's pie. In this slideshow, we've stuck with these five players, all of which allow customers to get up and running using a Web form. But other players bear watching, too, such as IBM and its SmartCloud Enterprise and the VMware-centric Terremark Enterprise Cloud, although both require that you engage with a rep rather than perform your own self-service startup.