I am doing a Webinar on "Webinar: Making the hybrid cloud a reality" at 12th 10AM PST (in an hour or so) and 13th 9AM GMT. Check here for more details.
An outline is given below.
The hybrid cloud option leverages the security of a private cloud solution and the elasticity/scalability of a public cloud. Architects designing hybrid cloud solutions need to reconcile between these competing goals. With WSO2’s Cloud Services Gateway organizations can now effectively mediate between their public and private clouds without compromising existing network firewall infrastructures.