A computer-implemented system to receive user input at a first functional module, to issue an instruction from the first functional module to change a value of a first context item in response to the user input, to receive the instruction at a context services provider, and to issue, via the context data services provider, a notification of the changed value of the first context item. The notification is received at a second functional module based on an association of the second functional module with the first context item, and first functionality of the second functional module is generated based on the notification of the changed value of the first context item.