Every mark in the ledger traces to public evidence with a date. This page explains where the data comes from, how coverage depth is graded, and what we do when the evidence runs out.
We build profiles from public sources a buyer could check themselves: vendor documentation and release notes, cloud-marketplace listings, government procurement price lists, regulatory filings, and named, checkable practitioner reports. We do not take capability claims from sales decks. Where a figure is reported but not independently verifiable, it is labeled reported, not verified inline.
Coverage uses three levels: full (documented, first-class support), partial (works with caveats — a newer connector, a subset of a data store, an integration in preview), and none. The caveat is the point: “BigQuery partial — verify” tells you more than a green checkmark ever could.
Sponsorship buys visibility — a richer profile, a place in the newsletter — never position, inclusion, or a single coverage mark. Rankings and the ledger order are set by the data alone. If we ever cannot keep that line clean, we will say so on this page. See the sponsorship policy for specifics.
This market consolidates fast — vendors are acquired and repositioned within months, which is exactly why most directories are out of date. Every profile carries a last-updated date, and the acquisition tracker records the deals that reshape it.
Data Security Platforms is in build. The current profiles use illustrative sample data to demonstrate the structure; real, evidence-linked data is being assembled now. Nothing here should yet be used to make a purchase decision.