IaaS companies are on the front line for the new generation of cloud computing..

Cloud computing infrastructure providers sell access to hosting, hardware, and management of cloud environments directly to corporations.

Many IaaS providers are hosting companies that have added cloud computing services to their existing menu of services. These companies include Rackspace (NYSE: RAX) and Terremark (NASDAQ: TMRK).

A number of established technology companies who never offered hosting are also entering the IaaS marketplace. These companies include Microsoft, Amazon and Salesforce.

This directory lists the leading IaaS companies

A list of publicly traded cloud computing stocks is offered by CloudyNews.com