"Project 'Brooklyn' is a networking on-ramp for migrating existing Enterprise applications onto Windows Azure. Project 'Brooklyn' enables Enterprise customers to extend their enterprise networks into the cloud by enabling customers to bring their IP address space into WA and by providing secure site-to-site IPsec VPN connectivity between the Enterprise and Windows Azure. Customers can run 'hybrid' applications in Windows Azure without having to change their applications."
(The "into WA" part of this description means into Microsoft's own Azure datacenters, I'd assume.)
Brooklyn got a brand-new mention this week in a blog post about High Performance Computing (HPC) Pack 2012, which is built on top of Windows Server 2012. (Microsoft is accepting beta applicants for the HPC Pack 2012 product as of September 10.) Among the new features listed as part of HPC Pack 2012 is Project Brooklyn.
Brooklyn fits with Microsoft's goal of convincing users that they don't have to create Azure cloud apps from scratch (which was Microsoft's message until it added persistent virtual machines to Azure earlier this year). Microsoft's intention is to make it easier for users to bring existing apps to the Azure cloud and/or bridge their on-premises apps with Azure apps in a hybrid approach.
And as to why am I writing about this now -- since it was unveiled a few months ago -- it's all about the disovery of the codename for this codename queen.