Databricks

I haven't found any solution.I'm assuming that currently my only option is the usage of Databricks Enterprise to model scenarios involving the mounting of object storage buckets.

Yes. The Delta client is open source, and lets you read/write Delta tables if you add it to your external application. See https://docs.delta.io/latest/index.html

You can find a lot more info on this at this MLflow product page, including a comparison table at the bottom. I'd summarize that comparison as: Databricks provides three key things in its managed MLflow service.Security: MLflow experiments, models, ...