Atlassian JIRA is a project management tool that organizes bug tracking and issue resolution using projects and tickets. It helps teams manage complex projects by allowing them to update tickets and add comments. Datadog's new JIRA integration streamlines issue management related to infrastructure or application performance by enabling users to create, tag, and update JIRA tickets directly from Datadog alerts. This integration allows for automatic ticket creation with custom ticket types, adding tags to group similar issues, and triggering inbound events when a new ticket is created.