Effective Service Transition can significantly improve a service provider's ability to handle high volumes of what?

Service level requests are routine requests fulfilled through the Request Fulfillment process within Service Operation, not handled by Service Transition.

Service Transition is the ITIL lifecycle stage specifically designed to plan, build, test, and deploy changes and releases into the live environment. Its key processes - including Change Management, Release and Deployment Management, and Service Validation and Testing - give the service provider the governance, coordination, and quality controls needed to handle high volumes of changes and releases efficiently and with reduced risk of failure or disruption.

Password resets are a common type of service request managed by the Request Fulfillment process in Service Operation, not within the scope of Service Transition.

Incidents and Problems are addressed by Incident Management and Problem Management respectively, both of which operate within the Service Operation lifecycle stage, not Service Transition.