Cisco's foray into the server market, the merger between Oracle and Sun Microsystem, the acquisition of Fujitsu Siemens Computers by Fujitsu, and the acquisition of Silicon Graphics International by Rackable Systems have stirred the equilibrium in the worldwide computer system industry in 2009. The industry is expected to see more companies engage in horizontal and vertical cooperation. Looking ahead to 2010, as the effects of the global financial crisis continue to be felt, the industry is expected to face changes within the next two to five years resulting from Moore's Law, virtualization, and cloud computing. The computing centralization effect stemming from cloud computing will intensify the competition in the green data center segment. Virtualization, energy-saving, and cloud computing are to lead to more acquisitions and mergers in future.