Evaluation of Postal Service contract effectiveness is an assessment of whether the contract met the identified needs and expectations of the client. It also addresses how the contract has generated revenue or loss and determines what corrective action needs to be taken to prevent future losses, if any. It is critical for the Postal Service to ensure that all deadlines are being met as scheduled. Contract performance information is used by the Postal Service for future purchases to guarantee that the proper investments are being made and that best value has been obtained.