Who creates the ML Models? Data Scientists or ML Engineers? [D]

Web: https://www.reddit.com/r/MachineLearning/comments/sbtch1/who_creates_the_ml_models_data_scientists_or_ml/

Who creates the preliminary models like xgboost, random forest, etc? I used to think ML engineers did that but was told by an ML engineer that the Data scientists at his company create the models & then he gets them ready for production. So is this typically the case or does it just depend on the company?

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