This paper aims to improve the effectiveness of the DESTE adaptive development, considering both intramural and regional educational needs and trends of the rapidly changing digital world. Empirical and analytical research methods were used. Analysis and synthesis of domestic and foreign researches in the field of creating educational ecosystems in the conditions of digitalization in education were performed. The results form the basis of an adaptive approach to create the DESTE and investigate its effectiveness in improving the quality of learning, which was performed using regression analysis. The paper substantiates the necessity and timeliness of creating the DESTE as a condition for accelerating intramural and cooperative (together with partners) innovative educational developments for their further transfer. The key features of DESTE and its significance for the training of digital education specialists were identified. A local digital ecosystem to study the "Information and Communication Technologies" subject was developed as a part of the university DESTE.