Some embodiments include a method of operating an avatar server. The method can include implementing an application service avatar in an avatar server that has at least an intermittent network access to an application service server for providing an application service to client applications. The avatar server can establish a service group by maintaining profiles of one or more end-user devices connected to the avatar server to access the application service. The avatar server can provide a localized application service by emulating at least a subset of functionalities provided by the application service to the end-user devices, for example, by locally processing, at least partially, a service request from at least one of the end-user devices at the avatar server. The avatar server can asynchronously communicate with the application service server to complete the service request.