requirements management gathers and assesses stakeholder wants and needs. Requirements are ‘solution-free’, i.e. they describe stakeholders’ wants and needs but do not determine exactly how they will be met;
solutions development takes the stakeholders’ requirements and investigates how they may be achieved to provide the best value.benefits management takes requirements that have been expressed in terms of benefits and manages them through to their eventual delivery. This runs in parallel with requirements management and solutions development and utilises change management;
change management deals with the transformation of business- as-usual that is necessary to utilise outputs and realise benefits.change control is a mechanism for capturing and assessing potential changes to scope. It ensures that only beneficial changes are made.