Some of the worst hours in a small team's year are the ones where your code was fine: a cloud region, a payments provider, or a DNS vendor was down, and your status page said nothing for two hours because "it's not our outage." It is your outage the moment a customer touches your product and it doesn't work. The runbook has four parts: classify fast, degrade deliberately, communicate early, and harvest the dependency list.
The first mistake is debugging as if the outage were yours. The second is assuming it's the vendor's and shipping "all systems operational" while your own queue silently fills. Do this instead:
| Signal | Points to |
|---|---|
| Vendor status page degraded + your errors started within the same window | Theirs (probably) — confirm with one canary request through a second path |
| Vendor green, your errors rising | Yours — switch to your own incident process |
| Vendor degraded AND your errors predate their window | Both — fix yours first; theirs may mask it |
Write down the timestamps. They settle the "whose outage was it" argument in the retro before it starts.
Every critical vendor needs a pre-decided answer to one question: what do we do while it's down? Pick one of three postures and say it out loud:
If you don't know which features depend on which vendors — that's the finding. See the DR plan template.
Two hours of vendor outage costs less trust than two hours of silence. The pattern that works:
The fill-in-the-blanks version is here: status page communication template.
Every vendor outage is a free audit of your architecture. Within a week, write down:
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The Ops Starter Kit ($14) includes the severity matrix and comms templates that make vendor outages survivable, and Vol. 2 ($27) adds the DR plan and evidence log for the review after. Launch week: 20% off any paid kit with code HIVE20 at checkout (ends Sep 11, 23:30 ACST).
The runbook tells you what the vendor outage means for you; the degraded mode playbook is the pre-written answer for what your product does while it lasts — the reduced mode, the switch, and the banner, chosen on a calm afternoon instead of improvised at 2am.
This runbook handles the day a vendor breaks. The single-point-of-failure audit makes sure no vendor is a total outage: five passes, a six-column register, and the four decisions — eliminate, duplicate, document, accept.
Related: the supplier concentration map tells you which outage hurts before it happens; this runbook is the 48-hour playbook for the day one of those mapped suppliers actually stops delivering. the critical spare parts list is what the shelf holds before the outage — the parts whose real lead time is longer than your downtime tolerance.
\nPut this to work. The Ops Starter Kit bundles the highest-leverage templates — incident response, runbooks, onboarding, checklists — into one download ($14).
Free start: grab the First 30 Minutes incident-response checklist, or get the free template library by email.