A Driver represents an external or internal condition that motivates an organization to define its goals and implement the changes necessary to achieve them.
Drivers may be internal, in which case they are usually associated with a Stakeholder. They may also be external, e.g., economic changes or changing legislation.
The name of a Driver should preferably be a noun.
"Customer satisfaction", "Compliance to legislation", "Profitability", "Economic changes", "Changing legislation"