Change management within business organizations is necessary to implement transformations such as:
Change becomes necessary because only agile and responsive companies thrive by adapting to changing market conditions.o

To wonder what Change Management really is is to wonder about the meaning of a term that is so generic, yet so used and ingrained in managerial vocabulary, that it has almost lost its content. This lack of specificity actually exemplifies a concept that, in its broad outlines, is common and applicable in so many situations in business.
We simply define change as the set of activities and tools by which the organization introduces a structured approach to change in individuals, groups and organizations, acting on People, Organizational Model, Processes and Technologies.
Change management is the management method for achieving successful change.
Some concrete examples of change projects:
In its essence, therefore, change management implies transformation and as such very often requires leaving the "comfort zone" and entering a territory rich in new opportunities, but unknown and therefore "worrisome" and "tiring" to explore. This concept applies in the abstract to the entire organization involved in the change, but in reality it is concretized on each individual person who will be called upon to change in his or her daily behavior and way of working.
It is not the organizations that change, it is the people that change. It is the cumulative effect of individuals' changes that then results in successful organizational change.