Yes, absolutely, that's an extremely important use case! In DBOS you can send messages to workflows and workflows can publish events that others can read. It's all backed by Postgres (LISTEN/NOTIFY under the hood).

Documentation: https://docs.dbos.dev/python/tutorials/workflow-tutorial#wor...

Here's a demo e-commerce application that uses messages and events to build an interactive long-running checkout workflow: https://docs.dbos.dev/python/examples/widget-store