Organizational change management is a framework for preparing for, adopting, and implementing changes to an organization's culture, policies, processes, environment, and employee roles and responsibilities. Managing change effectively is a key challenge for organizations as they must continually adapt to dynamics in the external environment. There are both internal and external forces that drive organizational change, such as strategic needs, structural redesigns, process improvements, and changes to employee skills and behaviors. Resistance to change stems from individual, group, and organizational factors, so change managers must use strategies like communication, participation, support, and incentives to overcome resistance and gain commitment to changes.