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Design data isolation for a multi-tenant AI SaaS so one customer's data can never leak to another.

AI features open cross-tenant leak paths that classic SaaS isolation never had to think about: shared embeddings, shared caches, and fine-tunes that memorize. One leak ends an enterprise contract. Here is the isolation model.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

AI features open cross-tenant leak paths that classic SaaS isolation never had to think about: shared embeddings, shared caches, and fine-tunes that memorize. One leak ends an enterprise contract. Here is the isolation model.

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