1. A computer program product, comprising a non-transitory computer usable medium having a computer readable program code embodied therein, the computer readable program code adapted to be executed to implement a method for performing a synchronization of data, the method comprising: storing, by a system, account information for a user, wherein the user is a subscriber to a service of the system; after the user has successfully logged into an application installed on a mobile device of the user and while the application is running on the mobile device, performing, by the system, a synchronization of data used by the application installed on the mobile device; wherein the synchronization includes, at least in part, sending to the mobile device from the system metadata describing one or more objects that are used by the application installed on the mobile device; wherein the synchronization is performed, at least in part, in response to a key event other than the user logging into the application.