Abstract
This paper explains the procurement management techniques that are necessary to make a project succeed amidst prevailing conditions, in which outsourcing is an inseparable part of system development projects. Dealing with ambiguity has become important in the upstream process that will decide the ultimate outcome of a project. The various responses to ambiguity are divided into separate categories, namely, "aversion," "mitigation," "imputation," and "acceptance." In this paper, particularly close attention is paid to the "mitigation" and "imputation" techniques of responding to ambiguity. Specifically, response methods are introduced for each of the main aspects that will determine whether the project succeeds or fails, such as clarification of scope, prior arrangements with vendors, careful selection of vendors, and the appropriate execution of multistage contracts.