The document discusses organizational responses to change, including both internal and external pressures for change. It outlines different types of change such as incremental, continuous change and radical or transformational change. It also discusses models for understanding and managing change, such as Gleicher's formula for the factors needed for change to occur, and the ADKAR model for change. Finally, it examines reasons for resisting change and different strategies for dealing with resistance at the individual, group and system levels of an organization.