An opportunity solution tree (OST) is a visual map that connects a single desired outcome to the customer opportunities that drive it, the solutions that address those opportunities, and the experiments that test those solutions.

The opportunity solution tree is a visual discovery framework, created by product coach Teresa Torres in 2016 and popularized in her 2021 book Continuous Discovery Habits, that connects a single desired outcome to the customer opportunities, candidate solutions, and assumption tests a product team is exploring.