TRIM is the accronym for: The Rational IT Model™. This is a vendor neutral reference model that can be used to adopt IT Service Management as a practice. The model origins from the experience of more than fifteen years of IT Service Management implementations, and describes the foundations and mechanisms of IT Service Management in such a way that it fits all sizes of organizations.
TRIM is a complete model for IT service delivery based on the ITIL® framework that has been simplified and scaled down to a level that all organizations can handle. The model includes all the processes, roles, templates and procedures that you need to implement IT Service Management as a working and efficient production of IT services that provide value to your organization. In addition to all the documents, the concept of the model is based on a holistic view with functions, escalation paths and governance of the organization, making it easy to get your entire organization, including suppliers, to work together. The model is easy to understand and to implement. It can be used as the basis for an ISO / IEC 20000 certification.
This means that organizations that have decided to adopt ITIL as a source of best practice still can get benefit from using TRIM as a reference model, without changing the aim for ITIL or ISO/IEC20000.
The difference is that ITIL is a framework of best practices, while TRIM is a reference model designed to be a guidance in connecting roles and organizational parts to functions and processes so that it becomes clearer how everything is connected in the delivery of IT services. Since the model is complete, managers and consultants can use this book to get a basic understanding for the mechanisms in delivering IT services and as criteria for gap analyses.
TRIM is community driven by its members, whose experience will contribute to the future development of the model. The members also consist of tool vendors, course providers and consultants who have developed a wide range of TRIM specific tool configurations, cloud services, courses and workshops to make it easier for organizations to adopt the model.

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