Builds that are synchronized by the app that have a link to an issue in Jira are now also submitted to Jira itself. This provides additional means of insight into your Jenkins jobs in Jira.
Build information is submitted to Jira to show this in the Development Panel next to data from Bitbucket commits, branches and pipelines.
If the build represents a deployment to an environment, then the build information is also submitted as a deployment to Jira showing the information in the Deployment Panel.
The Deployment Build Marker feature is required to be able to map a build to a deployment environment.