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How do you manage model versions and promote a model from staging to production safely?

'Which model is in prod right now, and how did it get there?' should be a one-second lookup with an audit trail. If it isn't, you have a rollback and compliance problem already. Here is the promotion pipeline.

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

'Which model is in prod right now, and how did it get there?' should be a one-second lookup with an audit trail. If it isn't, you have a rollback and compliance problem already. Here is the promotion pipeline.

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