Thank you for reaching out to us. I have checked with my team about your feedback related to Microsoft Sentinel and Jira Service Management.
we have recently-released to private preview: incident update trigger for automation rules and playbooks. So almost any update from Sentinel -> Jira is now possible. It will be public preview probably in few months.
You can also post your feedback on https://feedback.azure.com/d365community which is closely monitored by Product Group team.
Let me know if you have any questions.
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