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Apache Parquet is a free, open-source columnar storage format for efficient data compression and encoding, used primarily in big data analytics.

Apache ORC is a columnar storage format designed for high-performance data processing in Apache Hadoop ecosystems.

Apache Iceberg is an open table format that lets data lakes support ACID transactions, time travel, and schema evolution, making them behave more like data warehouses.

Apache Hudi is an open-source data lakehouse storage format that enables record-level inserts, updates, and deletes on cloud data lakes, supporting incremental data processing and ACID transactions.

Delta Lake is an open-source storage layer that adds ACID transactions, schema enforcement, and time travel to data lakes, enabling reliable batch and streaming data processing on cloud object storage.