The key factors in managing change:
1. Organisational culture.
Changing business culture can be very difficult.
What strategies could a leadership team use to change business culture?
Examples of change management here.
2. The size of the organisation.
Larger organisations are likely to be more difficult to change.
Reorganisation is likely to be necessary.
See the example from Google in the link above.
3. How quickly the organisation can change.
Failure to respond to internal or external factors quickly could result in business failure.
4. Managing resistance to change.
Resistance from employees or managers.
Owners may not be happy.
Details here.
Customers may be resistant to change.