Building Software by Contract: Why Specifications Should Come First

Specification-driven development treats detailed, formal specifications as binding contracts before any code is written, eliminating the gap between intent and implementation. By aligning all stakeholders—developers, QA, product managers, and clients—on a single source of truth, teams prevent costly misunderstandings and enable faster, more confident delivery. This approach moves quality assurance upstream and can automate test generation from specs, reducing defect-driven hotfixes and rework.