The leak categories databricks-cost-leak-hunter surfaces, plotted by monthly dollar impact against how much confidence the evidence behind them supports. Placement is a judgement call, stated as one — not a measurement, and not a customer result.
Two axes, both of them judgement. The vertical axis is monthly dollar impact — the order the skill's ranker actually sorts by, biggest number first. The horizontal axis is how much confidence the evidence carries: every line is stamped Confirmed, Estimated or At-risk, and the report's headline is split so it never sums confirmed and unconfirmed dollars under one verb. Money sets the order; confidence decides which total a figure is allowed to join.
Only the top-right pair is confirmed against the customer's own system.billing.usage: clusters left with auto-termination off, and scheduled jobs billed on all-purpose compute instead of jobs compute. The autoscaling floor is an explicitly modeled estimate and the Photon premium is a premium held for review, which is why both sit left of the confidence line whatever they are worth. The bottom-left pair are reported but never ranked — untagged spend comes out as an attribution gap in the report footer, and SQL-warehouse sizing is named in the skill's trigger surface with no dedicated ranked query behind it. The bottom-right quadrant is empty on this read: both categories the skill can confirm are ones its own cost-leak-categories.md describes as large — idle compute as one of the largest cloud-waste categories, and moving jobs off all-purpose compute as the single highest-ROI optimization in most deployments. That is a claim about typical workspaces, not a promise about yours: the ranker sorts on whatever the customer's own numbers turn out to be, so the vertical order here is the expected case, not a fixed one.
Scope check. databricks-cost-leak-hunter v2.27.0 is one of five skills in the databricks-pack. Its pipeline ranks four dollarized leak categories with a confidence tier each; the two bottom-left items on this chart are things the skill reports or names, not ranked categories, and are drawn here to make that boundary visible. Every category, confidence tier and detection query above is in the skill's own SKILL.md and references/cost-leak-categories.md. No customer result, benchmark or measured ROI appears on this page — the positions are ordinal, not numeric, and the sample dollar figures on the parent demo page are labelled there as an illustrative example, not an outcome.