The image below illustrates the CloudTimes top list of cloud computing companies organized in three categories and their corresponding sub categories:
1. IaaS – Cloud Management, Storage, Virtualization, Content Delivery Networks, Networking, Computing
2. PaaS – Development & Testing, Integration, Database, Application Platform, General
3. SaaS – Business Management, Vertical Apps, Tools, Cloud Security, CRM
Click on the image to enlarge.