Downloadable pluggable services and methods of distributing the same are described. The downloadable pluggable services may correspond to third party-developed communication services that can be downloaded to upgrade a communication system. The downloadable pluggable services may include a number of component parts that can be distributed among various servers in the communication system being upgraded along with instructions that enable the component parts to instruct each server in the communication system to operate in a coordinated fashion so as to provide the downloaded service.