Iceberg format v3 introduces deletion vectors that enhance the efficiency of Change Data Capture (CDC) workflows by allowing row-level deletions without rewriting entire files. The article benchmarks the performance improvements of Iceberg v3 over v2 during MERGE operations, demonstrating significant gains in speed and cost-effectiveness for large-scale data updates and deletes. Key innovations include reduced I/O and improved query acceleration through the use of compact binary representations stored in Puffin files.