The three levels where changes can be directed are explained below:
Strategic level change : It deals with the direction (business strategy) that a business is taking. A strategic level change is managed and carried out by senior managers.
Tactical changes : These changes refer to changes in the existing or new services that are required as a result of changing strategic direction. These changes are managed by middle management.
Operational changes : These changes are due to operational level changes in process and usually are driven by technology or service changes. They are managed by operation staff.
