Confluence can be integrated with other Atlassian tools using application links. An application link is a trusted relation between two applications. These applications are allowed to share information and work with each other.
To explain the possibilities, we will be connecting our Confluence installation to a JIRA installation. Using the same technique, Confluence can be connected to Bamboo, FishEye, Crucible, Stash, or another Confluence installation.
Integration of Confluence with JIRA allows you to, among others, display a list of JIRA issues in your Confluence page as shown in the following screenshot:

Make sure that the base URL is set correctly (in General Configuration) for both applications before adding an application link.
To connect Confluence to JIRA, perform the following steps:
Browse to the Administration Console (Administration | Confluence Admin).
Choose Application Links in the left-hand side menu.
Click on Add Application Link. Step...