strategist
Definition
The strategist is the one who forms
Given that the strategist is responsible for all aspects of strategy -- from purpose and vision on -- they engage in
For the overall business organization, the CEO is the chief strategist. Whether or not the CEO has all the requisite skills, he has the full responsibility to see to it that those with the requisite skills are employed to develop the strategy. For a business unit, the chief strategist is the head of the business unit.