The State of Apache Iceberg Catalogs in June 2026
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State of Iceberg catalogs is a strategic data engineering topic with strong community and technical depth.
Apache Iceberg has won the table format war, and the battleground has shifted to the catalog layer, which now governs metadata, access control, credential vending, and commit sequencing. The Iceberg REST Catalog specification has standardized interoperability, enabling server-side scan planning in Iceberg 1.11 that lets catalogs apply row filters and column masks before engines see data. Apache Polaris graduated to a top-level project, Snowflake and Databricks are competing on catalog interoperability, and a security company acquired an Iceberg operations startup for $9B, signaling the catalog's strategic importance for AI agent workloads.