A PMO is a group or department within a business, agency or enterprise that defines and maintains standards for project management within the organization. The primary goal of a PMO is to achieve benefits from standardizing and following project management policies, processes, and methods. Over time, a PMO generally will become the source for guidance, documentation, and metrics related to the practices involved in managing and implementing projects within that organization.Summarizing this then a PMO should: Ensure that all projects are aligned with the overall business strategy Highlight key project inter-dependencies and align releases across interdependent projects Assist in timely decision making on the overall control of projects Approve change requests of global relevance Monitor and report projectSounds simple perhaps, but in reality building an effective PMO is a complex process.Leading Successful PMOs is a book to guide all project based organisations, and project managers who contribute to and benefit from a PMO (Project Management Office), towards maximising their project success.