PRINCE2ensures that the specific management needs of an organization are met by incorporating tailoring.
Tailoring involves adapting the method to suit the project's environment, size, complexity, importance, capability, and risk. It allows organizations to apply PRINCE2effectively across different types of projects and organizational environments.References: PRINCE2Foundation Manual

Section: Volume A

During the 'Maintain' step of the 'business case management' technique in PRINCE2, the project manager assesses the ongoing viability of the project against the business case, including whether the outcomes are likely to deliver the expected performance improvements post-project. This is a continuous process that ensures the project remains aligned with business needs and expected benefits throughout its lifecycle.
References: PRINCE27 Foundation documentation on business case management.