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# Machine learning

Feature platforms, model operations, and the engineering discipline behind production ML.

- ["Feature stores: when your ML platform needs one"](/notes/feature-stores-when-your-ml-platform-needs-one) · Note · Every ML team eventually hits the same wall: the model that worked in the notebook fails in production, and the root cause is features. Training used one definition of "user's 30 day…

**Dhruv Doshi** · Toronto, Canada · [work@doshidhruv.com](mailto:work@doshidhruv.com)

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