Pub/Sub: Decouple One Lead Event from Every Consumer

Pub/Sub (Publish-Subscribe)

Pub/Sub, short for publish-subscribe, is a messaging pattern where a source publishes an event once to a shared topic, and each downstream system subscribes to receive copies.

The alternative is direct point-to-point integrations, where the source sends each event separately to every consumer.

Pub/Sub decouples the source from consumers: adding a new subscriber requires no change at the publisher, and the broker handles delivery.

Teams connecting one lead event to a MAP, CRM, and warehouse choose between this pattern and maintaining one connector per pair.

A practical example

Example: a lead event publishes once to a topic. The MAP, CRM, and warehouse each subscribe; when the team adds an intent tool, it subscribes to the same topic and the source system is untouched.

What to evaluate before investing

Does the broker support per-subscriber delivery guarantees, such as retries and dead-letter handling?
Can subscribers filter or route on event attributes, or do they receive every event on the topic?
What operational burden does the broker add, and is it managed or self-hosted?

Limitations and tradeoffs

A broker is another component to operate and a potential single point of failure; pub/sub also adds delivery latency versus direct sends, which matters for time-sensitive routing.

Plan your next step with MeshLine

Connect this decision to your automation, organic marketing and customer lifecycle management. In a MeshLine demo, discuss your existing tools, the scope you need and how to measure the result.

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