Demand Generation is the work of creating awareness, interest, and education before prospects are actively ready to buy.
It matters because strategy keeps channels from competing with each other. When this concept is clearly defined, the team can connect budget, audience, creative, offer, tracking, and reporting to revenue instead of chasing disconnected metrics.
Example
A specialist publishes explanations of a problem that potential buyers do not yet know how to diagnose. That content helps people recognize the issue and understand possible approaches before they begin comparing providers.