ITIL formally recognizes five separate aspects of Service Design that together describe the Service Design Process:
• The introduction of new or changed services through the accurate identification of business requirements and the agreed definition of service requirements.
• The Service Management systems and tools such as the Service Portfolio, ensuring mutual consistency with other services and appropriate tools support.
• The capability of technology architectures and management systems to operate and maintain new services.
• The capability of all processes, not just those in Service Design, to operate and maintain new and changed services.
• Designing in the appropriate measurement methods and metrics necessary for performance analysis of services, improved decision-making and continual improvement.
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