The advantages of ISM
ISM is a standard method for the establishment and improvement of your IT management. Adopting a standard means the end of lengthy discussions with sub-optimal results. It also means that IT managers can spend more time on their primary tasks: managing the requested service.
ISM contains the best practice of a large number of organizations, and is fully compatible with popular reference models such as ITIL, ASL, and MOF. These reference models 'in itself' are not implementable, but with the ISM method, you can take the appropriate guidance from those models and implement these in your organization.