We use JIRA for user support, specifically first-level user support.
Additionally, we use it to plan project steps. With the Carbon dashboard, it is possible to break the project into multiple steps. You can review what is done, what is set to be done, and what has been completed during the predefined time slots. For ITSM processes, we primarily use it for access processes.
We also utilize its automation capabilities, such as automatically creating JIRA tickets from monitoring tools during batch execution errors.