Start with the need
Meet the people involved and the one thing the system must do.
A GROWING LIBRARY OF VISUAL GUIDES
Big systems.
Small, clear steps.
Start with the simplest version. Add one part when a real problem calls for it. See how the complete system comes together.
SYSTEM BUILD01 → ∞
START SIMPLE
ADD WHAT IS NEEDED
SEE THE WHOLE FLOW
NO JUMPS. EVERY HANDOFF EXPLAINED.
THE COLLECTION01 guide liveBuilt to grow, one system at a time
EXPLORE THE LIBRARY
Start with one system.
Each guide is a complete walkthrough. This collection begins with the flow behind an online card payment.
How does a card
payment work?
Go from a shopper and a store to the banks, checks, messages, and money movement behind a complete online payment.
8 steps · About 5 minutesExplore the guide ↗
More systems will live here.
THE LIBRARY IS GROWINGThe same step-by-step format will make room for each new topic as it is built.
HOW THESE GUIDES WORK
No leap to the final diagram.
A full system is easier to understand when you know why each part was added.
Add one part
See the problem it solves before moving to the next part.
Follow the full flow
Trace each handoff and learn the standard terms in plain English.
READY TO START?Take the first system apart.
Open card payments