Time-dependent variability can be achieved in different ways. The simplest approach is to explicitly capture the required variability in the process model by enumerating all possible options. Alternatively, techniques like late binding can be used to select appropriate activity implementations during run-time depending on temporal conditions. Both approaches realize the variability based on the execution time of the respective node (Design Choice J[a]). Finally, the Deferred Choice Workflow Pattern may be used in combination with triggers to achieve time-dependent variability based on time lags between activities (Design Choice J[b]).