Tutorials

Project plans are built from the wrong material. The team collects user stories, estimates each one, stacks them into sprints, and calls it a schedule. User stories are units of value — they describe what the customer gets. They do not describe units of work. The actual work — the components, the integrations, the infrastructure, … Read more

Boundary-Driven Testing begins with a single observation: testing difficulty is not a testing problem. When a unit test requires a running database, the test is not broken. When a change to a business rule breaks seventeen tests that have nothing to do with that rule, the test suite is not fragile. When a component cannot … Read more

Experience-Based Decomposition begins with the same premise as VBD: components should be organized around how they change. Most frontend patterns organize by size or technical role. Atomic Design gives you atoms, molecules, organisms, templates, and pages — a clear taxonomy built on composition. It solves a real problem: it stops component libraries from becoming an … Read more

Volatility-Based Decomposition begins with a simple premise: systems should be organized around how they change. Most architectural patterns organize code by technical role. Controllers live in one place, services in another, repositories somewhere else. This produces a clear taxonomy, but it does not explain how change propagates through the system. When business rules evolve, workflows … Read more