Which stage of the service lifecycle identifies, defines and aligns the IT solution with the business requirements?

Service Transition is responsible for building, testing, evaluating, and deploying services into the live environment, not for identifying or defining the IT solution against business requirements.

Service Design receives requirements from Service Strategy and produces detailed designs covering the service itself, supporting processes, technology architecture, measurement frameworks, and documentation - ensuring the IT solution is fully identified, defined, and aligned with business requirements before it is built or changed.

Service Operation manages the day-to-day running of live IT services, handling incidents, problems, and requests - it operates services that have already been designed and transitioned, not define them.

Service Configuration is not a recognized stage of the ITIL service lifecycle - the five official stages are Service Strategy, Service Design, Service Transition, Service Operation, and Continual Service Improvement.