The scenario
A hotel needs to document how its central reservation system exchanges booking requests, confirmations, payments, inventory updates, and channel syncs with external actors.
What is in this drawing
Read the decisions behind it.
01
Central system as controller block
02
External actors as generic blocks
03
Data flows as intermediate signal nodes
04
Directed edges show request and response paths
Use for stakeholder onboarding or integration documentation when external systems and data flows must be clear.
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