This is a simplified version of the Remote Object Link option and is only available for JIRA 5.0 and later. Like the Remote Object Link, it provides a read-only view of linked Salesforce.com objects and supports many to many associations. Unlike the Remote Object Link, it is very simple to configure (this method only requires the Connection to be configured) and it stores some of the information from the Salesforce.com object so that it is still accessible if Salesforce is unavailable. For example, Cases will continue to display the Subject field.
Configuration is not necessary (if connection is already configured), customization is easy.
Some data is still available when Salesforce.com is unavailable.
Allows 1 to many links to Salesforce.com objects.
JIRA issue loads faster (as additional information is obtained asynchronously).
Can associate a JIRA issue with multiple Salesforce.com object types.
Cannot update the Salesforce.com object from within JIRA.
The JIRA issue will not display in the "Related JIRA Issues" view in Salesforce.com.
Cannot search from within JIRA issue navigator.
When Should I Use This?
You should use this to associate many Salesforce.com objects with a single JIRA issue when you do not have complex rules around the data in JIRA and do not need to see the related JIRA issues from within Salesforce.com.
For example, you could use Remote Issue Links for when you just need to add one or more links to Salesforce.com objects in a JIRA issue.
The following documentation is valid for JIRA 5.x and Salesforce-JIRA Connector 5.1+.