Temporal Cross-Cluster Communication#

When you operate multiple Temporal clusters – whether for regional deployment, compliance isolation, or blast radius reduction – workflows in one cluster eventually need to trigger work in another. This article examines three architectural approaches for cross-cluster communication, their tradeoffs, and guidance on choosing the right one for your situation.

This is an architecture guide. It establishes the concepts and patterns. The next article, Building a Worker Bridge, provides the full implementation.