1. A method for managing network-enabled devices in a virtualized network containing a plurality of network-enabled devices of a plurality of device context types, comprising: by a context mapping policy engine, receiving, from a context mapping policy function associated with a network load balancer, status data reflecting a number of network-enabled devices of a particular device context type being handled by a first specialized virtual machine instantiated for handling only the particular device context type, the particular device context type being one of the plurality of device context types; by the context mapping policy engine, determining that additional network capacity is needed for handling the particular device context type; by the context mapping policy engine, based on the determining that additional network capacity is needed, instantiating a second specialized virtual machine for handling only the particular device context type; and transmitting from the context mapping policy engine to the context mapping policy function, an advertisement of the second specialized virtual machine.