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June 16, 2026 · Harish Pujari #Architecture#Infrastructure

In regulated AI, the seams break first

Most AI failures don't happen inside a model or a database — they happen at the handoffs between them. A field note on why we engineer the seams.

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When an AI initiative stalls, the post-mortem usually blames the model. Often the model was the only part working. The failure was somewhere less glamorous: a retrieval pipeline that fell behind under load, a data contract no one owned, a backup that had never been restored.

Why the middle is where it breaks

A production AI system is a chain of components — storage, pipelines, a vector index, a model, a guardrail, an application. Each one can be individually excellent and the system can still fail, because the failures concentrate at the handoffs:

  • storage that’s fast in a benchmark but not under concurrent inference reads,
  • a freshness gap between when data changes and when retrieval sees it,
  • training/serving skew that no single team is positioned to notice.

What we do about it

We build across all four layers — Core Foundation, Data Middleware, Intelligent Layer, and Business Layer — specifically so the seams between them have an owner. The point isn’t to own everything; it’s that no failure falls in a gap between two vendors.

And it all runs inside your environment. You own the code and the IP.