“…This concept is based on the study of scientific and methodical approaches considered in relation to: structuring; definition of criteria for assessment, selection and prioritization; optimization of PP projects aggregates -such as those presented in portfolios. At the same time, in the above-mentioned works [7,8], the authors consider the problem of structuring the portfolio of PP projects, first of all, in the context of the implementation of such life cycle phases of the portfolio -as the stages of the portfolio management process -as initiation and planning, leaving out the stage of actual implementation, as well as optimization at the implementation stage. We should note separately that optimization, or in the first three versions of the PMI portfolio management standard -balancing, as it is interpreted in the specified versions [3-5], takes place not only at the actual optimization stage, but also, to a large extent, at other stages of the portfolio management process, including at the implementation stage, which is emphasized in the fourth version of the PMI portfolio management standard [6].…”