Previously, warm throughput allowed streams to scale capacity upward to handle spikes. The new capability lets customers reduce capacity by setting a lower warm throughput value. Streams adjust capacity to meet the configured value or recent peak demand, whichever is higher, ensuring responsiveness with cost efficiency.
This update provides users full control over write throughput scaling, aiding in budget optimization while maintaining performance for variable data ingestion rates. The feature is available without additional cost in all AWS Regions supporting On-demand Advantage mode.
Source & further reading
Amazon Kinesis Data Streams now supports scaling down ingest capacity with warm throughput ↗Source published 2026-07-24. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.