It depends on all the functionality you need. Not everything in JIRA is exposed via REST APIs and hence you might need a plugin in some cases.
I would recommend taking a look at existing products like ConnectAll (developed by my company) and see if that works for you. I know that it works between Cloud and on-Premise instances.
It started as any story starts, on a normal, rainy day. Admin meets App, and her name was Klok2, and like any first relationship we were both trying to make it work but neither one knew what...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs