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Forge

Forge is Atlassian's extensibility platform for building apps on top of Jira, Confluence, and Bitbucket. It is the largest consumer of events from Atlassian's Events Rail, receiving product events, lifecycle events, and async app events delivered via the Forge runtime.

Role in the Events Rail

Forge apps subscribe to specific event types (e.g., issue_updated) in specific tenants, often with additional filter expressions on event attributes (e.g., "only when priority is Critical and project.key is FOO"). This makes Forge the driver of the selective pub-sub pattern — most events have no matching Forge subscription.

The Events Rail delivers matched events to Forge apps via the Forge runtime (not via outbound HTTPS POST like customer-controlled webhook URLs). This distinction means Forge delivery paths have tighter latency and different failure semantics than external webhook delivery.

Seen in

• sources/2026-07-29-atlassian-inside-the-events-rail — Forge as largest event consumer; driver of selective-subscription architecture