Cloud computing is an increasingly broad topic that encompasses everything from Google Apps to data center services to virtualization to software-, infrastructure- and platform-as-a service. Technology executives are increasingly interested in cloud computing as a way to save money. Nevertheless, cloud adoption remains in the single digits amid security concerns. Rest assured that cloud computing is a game changer. Key players include: IBM, HP, Google, Microsoft, Amazon Web Services, Salesforce.com, NetSuite, VMware as well as dozens of others.