Lakehouse / Parquet cold tier
A cold tier 27% smaller than Parquet — still queryable, still recoverable
AT-1 re-encodes a Parquet table 27% smaller than Parquet-zstd, byte-for-byte value-exact, and keeps it block-addressable for predicate/projection queries — a drop-in cold tier, not a re-platforming.
Who it's for: For data-engineering teams on Snowflake / Databricks / Iceberg with large, rarely-scanned Parquet partitions.
−27%
vs Parquet-zstd
✓
queryable in place
✓
typed round-trip
PB
-scale TAM
How it fits: Tier cold partitions from Parquet to AT-1 (a typed Parquet→AT-1→Parquet round-trip reconstructs the exact column values); hot partitions stay in the warehouse, cold ones shrink in the lake.
Measured −31.6% vs Parquet-zstd on a real NYC-taxi table.
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