The authors justified the idea of developing online courses based on the use of Moodle tools, allowing the formation of knowledge in the field of technological and methodological skills and abilities to use educational applications, services, and their application in professional activities in the implementation of online learning in the digital environment of the university.  Assessment of the effectiveness of the online course is confirmed by the solution of professional tasks from the knowledge of the digital educational environment with interdisciplinary content and tasks requiring the use of e-learning tools. Analysis of the results using two-way analysis of variance revealed a significant effect of factors on the effective feature using the F-test. The significance of the study lies in the development of online advanced training courses aimed at improving the technological level of teachers and educators of the Republic of Sakha (Yakutia) in the implementation of the remote format of training using online distance learning tools and technologies.