This document discusses the importance of full traceability from requirements to tests. It defines traceability as information needed to track a product throughout its lifecycle. Traceability is essential to prove work is controlled, justify design quality, and understand and fix problems. An application lifecycle management (ALM) tool can enable traceability by centralizing information and linking artifacts like requirements, features, test cases, and campaigns. The document demonstrates how the Tuleap ALM tool can be used to achieve full traceability across the development process.