Organizational changes are considered as a necessary element of the organizational development process of the enterprise - the process of forming a new organizational system that ensures maximum efficiency and effectiveness in achieving organizational development goals. The development of the organization is a system of measures in the field of strategic management aimed at the implementation of targeted organizational changes that ensure the effective implementation of the strategy and the achievement of the strategic goals of the enterprise. The article presents a three-circuit descriptive model of the enterprise development management process that describes the management processes: the interaction of the enterprise with the environment, the implementation of the economic development strategy of the enterprise and organizational changes in the enterprise. Based on the development management model, the role and place of the organizational change management process and the stochastic dynamic model of this process, taking into account the characteristics of the environment of the enterprise and the intensity of the implementation of organizational changes at the enterprise, are demonstrated.