Get ready for the skies to rain frogs: As of now, Oracle will certify and support Oracle applications, Oracle Linux, and Java to run on Microsoft Hyper-V and Windows Azure platforms. And Oracle customer can run their existing Oracle licensed software on Azure as of now. The news was announced Monday by Microsoft CEO Steve Ballmer, Windows and Tools president Satya Nadella and Oracle co-president Mark Hurd.

The two companies will work together to certify those applications on those platforms and execs on both sides said the pact was driven by joint customers of the companies.

It also represents a dramatic step for Oracle which has tried to ensure that Oracle database and app server and application customers run Oracle VM as opposed to KVM or Xen or Hyper-V virtualization.

More to come as the conference continues.