Grocery Order Event Storming

This event storming diagram maps a grocery delivery order from checkout to delivery. Blue nodes are commands that request work, orange nodes are facts that happened, and the green node is a policy that reacts to the order being placed. The simple chain is a useful opening model because the group can ask where exceptions, ownership, and external systems belong. In a workshop, add cancellation, substitutions, out-of-stock handling, and refund events only after the happy path is agreed. Keep the event names concrete and in the past tense so participants can distinguish a recorded business fact from an instruction. Review the underlying definitions and totals before using this view to make an operational decision.