Technology debt has a well-known surface form: code that's hard to change, systems that are slower than they should be, integrations held together with custom scripts. Engineering teams talk about this kind of debt openly, and most companies have a working sense of where it lives. The dangerous debt — the kind that actually surfaces as a crisis — is usually somewhere else entirely.
The vendor-relationship version: you signed a three-year contract with a SaaS vendor three years ago, and the renewal is in a quarter. The pricing has changed, the product hasn't kept up with your needs, but you have 47 internal workflows wired into it and switching is a six-month project. The debt isn't in the code; it's in the institutional dependency on a vendor whose interests are no longer aligned with yours. You'll renew because the alternative is too expensive, and you'll be in the same position two years from now.
The license-assumption version: a piece of software your business depends on changed its license terms in a release you didn't read carefully. The free tier you've been on for three years now has caps that put you in violation, or the open-source project moved to a commercial license, or the vendor was acquired and the new owner is enforcing terms the previous owner ignored. You discover this on a Tuesday when somebody emails a quote. The debt was accumulating silently the whole time.
The changelog-version: a dependency you've been auto-updating for years had a security flaw in a minor version you ran for six months. The flaw was disclosed and patched, but you didn't know to check, because nobody is reading changelogs for every dependency, and nobody has been paying for an SBOM. The risk had been on the books the whole time; you just couldn't see it. None of these forms of debt show up in a code review. All of them are exactly the kind a quarterly audit catches — if anyone is doing one. The audit, like the dashboard, is one of those things you start doing after you've been hurt once and decide not to be hurt the same way again.