The product baseline marks the transition of a software product from development to maintenance. This baseline includes the final product release that is delivered to the customer. It signifies the completion of development and the beginning of the maintenance phase, where the focus shifts to fixing defects, making minor improvements, and ensuring the software remains operational and effective in the production environment.

Allocated, functional, and developmental baselines are typically established during earlier phases of the software development lifecycle to manage different aspects of the development process.