Many marketing campaigns fail not on reach but whether or not the message (or proposition) is understood.
It often goes like this: the message is in place, the product is well thought out, live with that campaign. And then: nothing. Visitors on your beautiful landing page but without desired results. In many cases this is not due to targeting, creation or budget but due to something more fundamental: the proposition is not well understood by the target group. Time to optimize your proposition through user research.

