Abstract
The paper considers the main tool design environments of the ES and DSS (DSS Project Expert) and (DSS «Выбор») presented on the market and taking into account the typical specifications of modern computer systems, the RAD Studio 10 programming environment was chosen as the development environment for the DSS and Microsoft (Visual Studio), C# programming language for organizing work and modules that implement methods and models. The article analyzes the main approaches to choosing strategies for investors in the DSS during the procedure for evaluating investment projects in the field of digitalization of enterprises, taking into account multi-factorism, the project is implemented in C #. When choosing the C # programming language for this module, two main tasks were set - the speed of development and the ability to learn about errors even at the program compilation stage.