In this JIRA cloud tutorial, we will learn how to close the epic in Jira. Closing Epic in Jira is similar to closing any other issue types in Jira, you just have to follow the workflow associated with the issue types and move the issue to the closed or done state of the workflow.
This tutorial explains about Gadgets in JIRA. JIRA Gadgets are very helpful in getting additional functionalities in JIRA as required by your project. You can easily add JIRA Gadgets from Atlassian marketplace.