Cucumber for Jira is available only for Jira Cloud instances.
Prerequisite
You need Jira administrator permissions to install the Cucumber for Jira app.
Installation
In Jira Settings, go to the Apps tab:
Go to the Find new apps tab and search for Cucumber for Jira. Cucumber for Jira app will appear in the search results then you can click on it:
Click on Try it free at the top right to install it and confirm by clicking on Start trial:
That’s it! Cucumber for Jira is now installed.