IBM Hyperledger Fabric Running Multiple Nodes on Multiple Datacenters & PCs
In the recent technical steering committee meeting of Hyperledger they discussed the planning for an initiative to connect across multiple cloud providers, to demonstrates that Fabric can be deployed to multiple cloud platforms and integrated into a highly distributed and heterogeneous consortia network.

This effort (as of the time of writing) is under way with a number of community members interested in contributing. 

You can read about it more in the meeting minutes here.