The written companion to a Production AI video. The architecture detail, diagrams, and receipts that don't fit on camera.
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Aug 8, 2026
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5 min read
Meta puts prompt injection success against production agents at 86%. That is the number for teams defending one boundary, and the layer this team was proudest of was the one that would have owned them.
AI didn't make engineering principles less important. It made the ones we took for granted matter more. Production AI is the architecture, tradeoffs, and judgment that separate demos from systems that survive production. Written for engineers, and the leaders responsible for them.