Goals-Signals-Metrics is a simple process for breaking goals down into measurable indicators of success.
Start by outlining long-term qualitative goals. Goals are output-based (vague & feature-dependent) or outcome-based (precise, user-centric). Opt for the latter.
Then, identify signs that will let you know if you're on track to hitting goals or not.
Finally, identify pieces of statistical, goal-relevant data that you will use to validate the signals, and prove success.
The goals-signals-metrics framework can be used in conjunction with
Google's HEART framework gives you a robust, high-level picture of UX quality.
