Patent attributes
A system and methods for the migration of complex computer applications and the workloads comprising them between physical, virtual, and cloud servers that span a hybrid cloud environment comprising private local and remote customer data centers and public cloud data centers, without modification to the applications, their operational environments, or user access procedures. A virtual network manager securely extends the subnets and VLANS within the customer's various data center across the distributed, hybrid environment using overlay networks implemented with virtual network appliances at nodes of the overlay network. A server migrater migrates individual workloads of servers used by the complex application from one pool of server resources to another. A migration manager application provides a control interface, and also maps and manages the resources of the complex application, the hybrid environment, and the virtual network spanning the hybrid cloud environment.