Change is a constant. It is therefore vital to maintain a high level of assurance and stability when executing projects, programs and portfolios.Around the world, there are many organisations in both the public and private sectors, who recognise that their portfolio, programme and project management is best supported through a delivery support office. The Cabinet Office's PRINCE2® Project, Programme, Portfolio Office Management all touch on the need to provide adequate support structures for these best practices, but until now there has been no single source of information that either organisations or individuals can use for guidance or advice on setting up or running an effective delivery support office.PRINCE2® Project, Programme, Portfolio Office Management is a Best Management Practice certification and is aligned to PRINCE2® brings the principles, processes and techniques to facilitate effective portfolio, programme and project management through enablement, challenge and support structures.PRINCE2® Project, Programme, Portfolio Office Management is now the established approach in supporting senior management decision making through the portfolio, its programmes,