PRINCE2

https://en.wikipedia.org/wiki/PRINCE2

PRINCE2 (PRojects IN Controlled Environments) is a structured project management method,[1] PRINCE2 and certification programme for practitioners in the methodology who are accredited, qualified through training. PRINCE2 emphasises dividing projects into manageable and controllable stages.

It was initially developed as a UK government standard for information systems projects, and the current owner, AXELOS, is a joint venture by the Cabinet Office and Capita, with 49% and 51% stakes respectively.[2]