If you mark โSkip apply when plan has no changesโ, under โProject Settingsโ -> โPoliciesโ tab, the apply step will be skipped completely when there are no pending resource changes in the terraform plan.This is especially useful for automated deploys, in case you want to have your continuous deployment / scheduled environments require user approval to apply. In such a case, checking this box will only require user approval for plans that have actual resource changes in them.