How is data synced between systems?

Last verified against certain.com:

Certain syncs event data outbound in real time using Certain Signal, which pushes tagged data from the Certain Platform to target systems via configured Connections and Flows. Connections supply the target credentials (OAuth/webhook), Flows define sources/filters/mappings/destinations, and Signal provides retry, replay, and metrics to ensure reliable delivery.

Supporting details and typical setup steps: