A data lake on S3-compatible storage is an object bucket holding open file formats (Parquet, ORC, JSON) partitioned by key, queried in place by engines like DuckDB, Spark, or Trino. You skip a proprietary warehouse, keep the raw data, and control the bill. The only hard requirement is a solid S3-compatible API. Every command below is copied verbatim from the official source cited beside it. This sandbox has no Docker daemon, so none of the commands were executed here; they are marked accordin...