What type of organizational unit has a unique business mission, product line, competitors, and markets relative to other units in the same corporation?

Strategic business unit

Explanation:

A strategic business unit (SBU) is a distinct or separate unit that is operated and managed independently but is still part of a large organisation. It is a autonomous unit of a large organisation that has its own objectives, vision and mission but is still an integral part of the large organisation. The major aim of a SBUs is to make profit, and they focus offering products annd services to a particular segment of a market.