VMware and Rackspace announced a new interoperable OpenStack cloud architecture this week at VMworld 2015 to help customers spin up OpenStack clouds without the complexity, particularly those associated with hybrid or multi-cloud environments. According to a blog post by VMware on Monday , the interoperable OpenStack cloud architecture enables customers to start with either VMware Integrated OpenStack or Rackspace Private Cloud powered by OpenStack, and build all of their infrastructure automation using standard OpenStack APIs.