DESIGN STUDIES
Working through hard problems in commerce at scale.
Each study takes one problem, sets out the options, and explains the reasoning behind the choice — including what the choice costs.
Every study opens with a short, plain summary of what the decision gives you and what it puts at risk. The detail below it is for people who build these systems. These are self-directed studies, not client work, and they contain no client names or numbers.
One platform serving many brands and markets depends on where you draw the boundaries. Put the boundary where ownership and speed of change differ. Shared, stable behaviour on one side. Brand and market differences on the other, written as configuration and not as copies.
Read the study →Consistency & coupling trade-offsConnecting every downstream system directly into checkout makes checkout fragile. Recording the order once and letting each system pick it up on its own time removes that risk — as long as you are honest about the one step that must still happen while the shopper waits.
Read the study →Repeatability as an architectural propertyWhen sites are set up by hand, no two end up the same. Making the configuration the single source of truth — and making the step that applies it safe to repeat — turns setup from weeks into days and stops the differences at the source.
Read the study →