Two markets stand out above all else when looking at the first quarter of 2011: infrastructure as a service (IaaS) — the epitome of cloud computing — and big data. Amazon Web Services continues to lead the IaaS space in terms of customers and innovation, while Rackspace, buoyed by momentum around OpenStack, will be its primary competitor for mainstream customers. In the big data space, there are so many players and terms floating about it’s difficult for outsiders to get a handle on who’s who and what’s what, though such activity validates the technologies. Other developments this quarter included HP’s impending presence in the cloud computing and big data spaces and the realization that Intel won’t be left to die if low-power servers based on x86 processors catch on like the buzz late last year suggests they will. Additional companies mentioned in this report include VMware, Microsoft, Cloudera, SeaMicro and Facebook. For a full list of companies, and to read the full report, sign up for a free trial.