Use Jira Issues (NextGen) with Lightning Experience
The Salesforce Package features the Lightning Web Components, which inherit global HTML attributes and events, making them more functional and performant than their Aura counterparts.
This page explains how to configure Lightning Web Components for standard and custom objects in Salesforce Lightning Experience.
Using the Classic view? Check out Configuring Jira Issues with Visualforce.
Prerequisites
Before continuing, ensure you have already:
Published the Salesforce domain
if the Salesforce domain has not been published, custom components will not be displayed in the Edit Page section.
Use the Lightning App Builder to configure a custom page layout
In your Salesforce, load an object's page.
Click Settings > Edit Page.
The Lightning App Builder loads.
In the sidebar, scroll to the bottom to find the following component:Jira Issues (NextGen)
Drag the component onto the desired location for your page layout.
After you've placed the components in the desired locations for your page layout, click Activation... near the top right corner to set your Lightning page assignment.
When you're done setting the page assignment, click Save.
Now, when you load an object's page, you can see Jira issues associated with the object.