The stampede to buy SDN startups is accelerating, with Oracle Corp. the latest to make a move by striking a deal for Xsigo Systems. The company said Xsigo’s tools will be combined with Oracle VM server’s virtualization technology.
 
 
This article from Computerworld U.S. outlines the early announcement and Oracle’s strategy. But also take a look at this piece from Forbes, which notes that SDN is part of a long trend to reduce the data centre stack to software