ITSM (Information Technology Service Management) is defined within the core ITIL v3 books as "a set of specialized organizational capabilities for providing value to customers in the form of a service". ITSM is a discipline for managing information technology (IT) systems, philosophically centered on the customer's perspective of IT's contribution to the business. ITSM stands in deliberate contrast to technology-centered approaches to IT management and business interaction. ITSM is process-focused and in this sense has ties and common interests with process improvement movement (e.g., ITIL, Six Sigma, CMMI) frameworks and methodologies. The discipline is not concerned with the details of how to use a particular vendor's product, or necessarily with the technical details of the systems under management. Instead, it focuses upon providing a framework to structure IT-related activities and the interactions of IT technical personnel with business customers and users.