What we learned shipping production systems on short timelines — the architecture decisions that held up, the ones that didn't, and the numbers behind them. Written by the engineers who did the work.
AI Stack
Multi-agent workspaces fail when agents step on shared state or loop into hallucinations. Here is how to design event-driven context buses, bounded tool sandboxes, and deterministic human-in-the-loop guardrails.
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Engineering
Most "AI-first" architectures put a model on the critical path and inherit its latency and failure modes. Here's the split we use instead — and where a model genuinely earns its place.
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AI Stack
A tool-calling agent is a latency budget you spend three times over. Where the milliseconds actually go, and the four techniques that took our median turn from 4.2s to 1.1s.
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Velocity
Short timelines aren't about typing faster. They come from cutting the four things that actually consume a project — and refusing to cut the five that make it survivable.
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Security
Row-level security is the cheapest tenant isolation you can buy and the easiest to get subtly wrong. The policies, the four bypasses that undo them, and how to test that they hold.
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Enterprise AI
A copilot that answers questions about your ERP is a search bar. One that can act on it needs a permission model, an approval layer, and an audit trail before "autonomous" is a safe word.
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