Abstract
Project portfolio management (PPM) has a central position in both the business literature and companies' management practices. Although PPM has been practiced for decades and the theoretical contributions in the field have grown, overviews of the state-of-the-art of PPM research and its processes are scarce. Therefore, this paper analyses the PPM literature to identify relevant PPM concepts through a systematic literature review. This study analysed 470 articles, and the core PPM sub-categories were identified. The main findings show that, in general, two or more PPM sub-categories are collectively analysed in the publications, which indicates that there is a synergy among these sub-categories. Moreover, since the subject is somewhat broad, several tools have been developed to support the complex decision-making problems involving optimisation, statistical techniques, stochastic simulations, and artificial intelligence. For practitioners, the findings of this study may provide a useful basis for PPM implementation.
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