No two projects are the same. The level of control required for a multi-million dollar project is much greater than that required for a project only costing ten thousand dollars. The number of stages required for a high risk project is likely to be greater than a low risk project. The level of control required for bank managing a million pound project is likely to be less than that required by a small company managing a similar cost project.
In other words, if practitioners simply apply the whole of the PRINCE2 method blindly to every project, they are not likely to gain the benefits of the method. This is why practitioners must tailor PRINCE2 to suit the needs of the project environment. This is done by tailoring the PRINCE2 processes, themes and management products.