What are epics?
In Jira Software, epics represent large bodies of work that can be broken down into individual tasks. This work becomes a child issue of the epic, which is sometimes referred to as the parent issue. Issues are displayed as colored bars on the roadmap.
What are child issues?
Child issues can be created directly from the roadmap and are nested within the epic they belong to. The most common child issues are stories, tasks, and bugs, but you can create new issue types to represent different pieces of work for your teams.
Quickly move issues to other epics and reorder issues or epics by dragging and dropping them directly from your roadmap.
What are dependencies?
Dependency management is critical for teams. When dependencies are visualized and well-mapped, a team can adapt and plan for alternative paths. In Jira Software, you can easily show the relationship between epics and child issues by mapping dependencies directly from the roadmap.
Dependencies, also called issue links, allow you to show the order in which issues need to be done. For example, a dependency between two issues may indicate that there’s a potential blocker that the team needs to address.
In order to use this feature, a Jira admin needs to enable issue linking.