The Supplier Management process includes: (1) Service Design activities, to ensure that contracts will be able to support the service requirements (2) Service Operation activities, to monitor and repo

This omits Continual Improvement activities (3), which are an explicit part of Supplier Management to ensure suppliers continually meet or exceed business needs.

Limiting Supplier Management to only Service Design activities ignores the operational monitoring and continual improvement functions that are integral to managing suppliers throughout the service lifecycle.

ITIL Supplier Management is not confined to a single lifecycle stage. During Service Design it ensures contracts align with service requirements; during Service Operation it monitors and reports on supplier performance; and during Continual Service Improvement it drives supplier improvements to keep pace with evolving business needs. All three activities are recognized components of the process.

This omits Service Operation activities (2) for monitoring and reporting supplier achievements, which is a key ongoing function of the Supplier Management process.