A driver is defined as something that creates, motivates, and fuels the change in an organization.
Drivers may be internal, in which case they are usually associated with a stakeholder. They may also be external.
The name of a driver should preferably be a noun.
Motivation
"Customer satisfaction", "Compliance to legislation", "Profitability", "Economic changes", "Changing legislation"
Composition, Aggregation, Specialisation, Influence