PM3 is a different Project and Portfolio Management tool. It has been designed and developed by practitioners for practitioners.
It has been designed specifically to help manage large-scale business change programmes. Many tools manage programmes from the 'bottom up' where there is a danger that the programme manager gets lost in the detail. PM3 allows critical risks, issues and milestones to be escalated/promoted up from a project level to higher levels in the programme work breakdown structure. This enables the programme manager to identify quickly the areas where he or she needs to focus. Once these are identified an intervention can take place to bring the programme back on track.
PM3 focuses on outcomes and change. It plans projects as a series of workstreams and outcomes, planned back from the desired end business outcome. This ensures the programme/project teams maintain their focus on delivering the change that is required instead of 'carrying out a series of activities', i.e. everyone stays focused on delivering successful business outcomes, not just delivering project deliverables.