The implementation of ITIL version 4 in the company Company File SAS is carried out in different stages, which begins with the characterization of the company and the intervened area is investigated in depth the processes, activities, the objectives of the company and those that are related In the area. With the information, a diagnosis is applied where the weaknesses in the current state of the company are identified and how these generate an opportunity in the application of the guide, the next step is to identify what practices can help to strengthen the weaknesses detected. Finally, the practices must be structured and implemented in the processes or services offered by the company.