Glossary
Eighteen terms the category uses, written down in one place. We maintain the list because we produce most of what it describes, and because the list did not exist until we needed to cite it.
The category
Six terms for the material itself. Usage varies by audience and, in one case, by whether the audience is a buyer.
The product
These are shipped features. Each was named before it was built, which shortened the roadmap considerably.
The measurements
The category's metrics, with the definitions we use when we report them. Methodology is on the benchmark.
Definitions are reviewed annually by the platform that applies them. Suggested additions are accepted and generated.