The requirements are the reason for the project and development work. Requirements set the expectation for the final product. Either these are achieved or there are reasons communicated to the stakeholder to alter or eliminate specific subset of the requirements. Requirements management requires an understanding of the connection between the requirements, the project objective, and ultimately the work of the project. Requirements management includes commitment to meeting the requirements, the bi-directional traceability of the requirements from customer input to instantiation of the product as well as addressing requirements changes systematically.