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