Value Proposition is the clear promise of why a customer should choose a product, service, or company and what outcome they can expect.
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 scheduling product might explain that it brings booking, reminders and availability into one workflow. The value proposition connects the capabilities to a buyer’s problem without promising a result that has not been established.