A big part of operations is to developing Objectives and Key Results for businesses and then defining metrics to quantify them.
Case Study
I was building OKRs with one of my clients. When we got to the metric aspect of quantifying the objectives, I wanted to build a library to help them and give them options.
Objectives: What do we want to achieve?
Key Results: How do we measure our progress?
Metrics: What we will use to quantify our progress?