Some key benefits are:
The costs of a temporary manager are clear and set from the beginning in terms of the project. Even though the assignment is entrusted in a very short time, it does not involve any of the risks associated with the hasty hiring of a manager for an indefinite period of time. On the contrary: the speed in which an interim manager starts to work is a key factor to reduce the costs due to delays in starting a project or in solving a structural problem, which may not be obvious but are often huge.
While taking into consideration the corporate culture, the interim manager is not influenced by internal politics and the modus operandi of the organization, which they observe objectively from the outside. This makes the manager able to identify non-functional processes that are otherwise invisible to the people who have been working for a long time in that environment. The manager is thus able to make changes towards growth and development, purely in the interest of the company.