The communication of Federation for Jira between your different Jira instances is based on Application Links. This is a common concept from Atlassian, across most of their products.

Application Links

To build your Jira Federation, all you need are application links between your Jira instances.

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Application Links Documentation

 Only application links to other Jira instances are relevant for the Federation for Jira app.

Federation for Jira App

Do not attempt to install the Federation for Jira app, before you have configured and verified the application links between your Jira instances.

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See the Federation for Jira Installation Guide for further details about the installation.

Example:

You have 3 Jira instances:

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