Different Virtualization Technologies
Find a major data center anywhere in the world that doesn't use VMware, VMware dominates the market of server virtualization. this domination doesn't stop with its commercial product, vSphere ESXI. VMware also dominates the desktop-level virtualization market and perhaps even the free server virtualization with its VMware Server product open source. VMware remains in the dominant spot due to its innovations, strategic partnerships and the must important is a rock-solid products
Citrix was once the lone wolf of application virtualization, but now it also owns the world's most-used cloud vendor software: Xen (the basis for its commercial XenServer). Amazon uses Xen for its Elastic Compute Cloud (EC2) services. So do Rackspace, Carpathia, SoftLayer and 1and1 for their cloud offerings. On the corporate side, you're in good company with Bechtel, SAP and TESCO.
If Oracle's world domination of the enterprise database server market over Microsoft SQL Server, doesn't impress you, its acquisition of Sun Microsystems now makes it an impressive virtualization player that are into the greatest. Additionally, Oracle owns an operating system (Sun Solaris), and count with multiple virtualization software solutions (Solaris Zones, LDoms and xVM) and server hardware (SPARC). With a unstoppable force (Oracle) You get the Oracle-centered Data Center.
Microsoft came up with the only non-Linux hypervisor, Hyper-V, to compete in a tight server virtualization market that VMware currently dominates. Not easily outdone in the data center space, Microsoft offers attractive licensing for its Hyper-V product and the operating systems that live on it. For all Microsoft shops, Hyper-V is a competitive solution. And, for those who have used Microsoft's Virtual PC product, virtual machines migrate to Hyper-V quite nicely.