Hi @Saeid Hedayati​ ,

One thing to note is that Databricks Feature Store tables are delta tables, the difference being a different UI and some additional capabilities. So it's not neccessarily FS vs. Delta, as the FS uses delta.

The benefits of using the Databricks FS (as opposed to a standalone delta table) are primarily due to how easily and automatically it integrates with other Databricks features like MLflow, and it provides capabilities like lineage (ie. which models and notebooks are using which features), automatic lookup for models, as well as the UI (any more that I'm probably forgetting).

I'm not sure if that answers your question. I can try to clarify more if needed