One or more computer operations are triggered and executed when multiple sets of conditions that define a split trigger and that are evaluated at multiple locations are satisfied. The operations may involve allocating or deallocating computing resources (e.g., by establishing or tearing down a persistent connection), generating a message to be displayed on a computing device, altering stored data, and/or other activity. In an illustrative client/server computing environment, a first set of client conditions of a first split trigger is evaluated at a client device, using parameters observable at the client without interaction with a server. When the first of client conditions is satisfied, the client transmits a signal to a server that then evaluates a first set of server conditions of the first split trigger. If the first sets of client conditions and server conditions are satisfied, the computer operation(s) associated with the split trigger are executed.