The opportunity solutions tree (OST) is a construct that helps internal teams discover and create what is of real value, both to their customers and to their company, continously. It is clear, logical, and empirical, quite similar, in many ways, to the lean start up approach to launching a new company, for example, in its appeal to organizations that attend to metrics and experimentation carefully.
This 37′ presentation on it, by its inventor, is just great. Though more than seven years old, it now appears almost prophetic, so steadily has the OST construct continued to gain acceptance and momentum.