I believe that the Atlassian Marketplace does currently have a few different plugins for Jira that could be used to connect Jira with another site/service such as Sharepoint. I'd recommend taking a look at these search results:
I hope this helps.
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
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