Platform-as-a-service market remains fragmented, but clear leaders should emerge within next year or two
Non-traditional players like Amazon and Google shake things up, but enterprise mainstays like Microsoft and VMware may get the last laugh
WebEx is successful SaaS player, but Cisco's strategic focus is enabling cloud infrastructures
CloudStack helps companies deploy and manage large virtual machine networks
Management heavyweight plays the role of enabler of cloud management services
Also, company has security tools and management software
