What are the different issue types in JIRA and when would you use each one?

1. Story: Stories are used to define requirements from an end-user perspective. They are typically used in Agile projects to represent a piece of functionality that delivers value to the end-user.

2. Bug: Bugs are used to track defects or errors in the software. They are created when something is not working as intended and needs to be fixed.

3. Task: Tasks are used to break down work into smaller, actionable items. They are great for tracking specific actions that need to be completed as part of a larger goal.

4. Epic: Epics are used to capture a large body of work that can be broken down into smaller stories or tasks. They are useful for planning and organizing work at a high level.

5. Sub-task: Sub-tasks are used to break down larger tasks into smaller, more manageable pieces. They are often used to divide work among team members or to track progress on specific aspects of a task.

Each issue type in JIRA serves a specific purpose and is designed to help teams effectively manage and track their work. By understanding the different issue types and when to use each one, teams can streamline their project management processes and ensure that work is well-defined and actionable.