If you have multiple JIRA instances in your organization, it is sometimes useful to integrate them together, especially when teams from different projects need to collaborate and work together. In this recipe, we will integrate two JIRA instances together so we can link issues across systems.
Perform the following steps to link two JIRA instances together:
Once you have integrated two JIRA instances together with an application link, you will be able to search for and link issues from the remote JIRA instance to issues in the local JIRA instance. As shown in the following screenshot, when you use the link feature, JIRA will prompt you to select the JIRA instance that you want to search for issues to link to: