Experiment Lab
Controlled comparisons of published versions, and what their measured numbers show. Approving a draft in Draft Lab stores an experiment here. Results are computed only from recorded metrics; a single post never proves a lift.
Store the spec before any publish
Work with an experiment
Store the experiment's plan before anything is published, then compute its result once checkpoints are recorded.
Analysts may record results but cannot publish.
Guardrail checks
These deliberately try things the app must refuse, so you can see the refusal.