The monograph outlines a new scientific methodology - system technology (system philosophy of activity), first proposed by the author in the early 70s. Contains the formulation and proof of the principle of consistency and the principles of technologization, justification and formulation of the Law of consistency and the Law of technologization, models of systems and processes. An applied method of system technology has been formed and its applications in computer science, management, education, ecology, economics, mathematics, social policy, in the construction of large-scale activity programs, etc. are outlined. The system technology method allows you to create theories for solving scientific problems and constructive ways to solve practical problems for different fields of activity. M. Telemtaev’s system technology, as many years of experience shows, has proven useful to teachers, researchers, students and graduate students, designers, practical managers, and specialists in the field of education, computer science, management, business, economics, ecology, banking and insurance, personnel policy, leaders and participants of non-governmental organizations, government employees and many others. To correctly display mathematical operands, use a font that supports Unicode (for example, Arial Unicode MS )