Catalog federation gives you one authorization model and one audit point across regions. Here's what it solves, what it doesn't, and how to build.
Federate first so analytics work now, migrate what benefits from migrating, and leave the rest where it is indefinitely.
Parquet files have a version field that doesn't reliably signal feature requirements. A new versioning discipline is coming, borrowing from Iceberg's.
A large share of production transformations fit comfortably on one machine. PyIceberg, DuckDB, and branch isolation give you a production path that debugs.
