Service delivery and service support are the two key components of IT services. IT Service Management (ITSM) is concerned with managing these two components. It is a discipline that helps companies plan, design, deliver, operate, and control IT services that they offer to their customers.
ITIL is the widely recognized framework and an international standard for best practices in IT Service Management. ITIL has five levels of certifications. ITSM and ITIL are based on a service strategy with service design, transition, and operation as key components. Training in ITSM and ITIL is growing in demand as organizations pay a premium for certifications and experience in these methodologies.