Within triggers or schedules it would be good to have the ability to sent a http post as an action. This would make it easy to synchronise with other systems e.g. CRM.
This could use dome sort of standard json format or be customised using placeholders.
The target endpoint address could be configurable in the settings so that it is easily reused.
Users that require synchronization between crm and Zammad that I do know do exactly that.
Either via API or (may less preferred way) via direct database access.