New engineers and reviewers waste weeks rebuilding a mental picture of the system from scattered diagrams and chat threads. This ten-slide deck gives a tech lead a fixed order for the story: who uses the system, what the main services are, how data moves, what it connects to, where it runs and what changes next.

The sample describes a fictional ordering platform, Quayside, built by Ravenmoor Digital: 14 services, 4 outside systems, 2 regions and a $92k monthly cost. Replace the services, owners, figures, integrations and roadmap with your own, and add your diagrams to the image slides.