1. A computer-implemented method, comprising: executing, by a processing device, a process instance in a process diagram, the process diagram comprising a plurality of process steps; identifying a condition associated with a first process step; determining an outcome for the first process step based on a computed probability; and bypassing the first process step and branching the process instance to a second process step based on an expediting rule, the expediting rule comprising the condition and a branching action according to a selected outcome.