AWS Weekly Roundup: Amazon Bedrock agent workflows, Amazon SageMaker private connectivity, and more (February 2, 2026)

This AWS Weekly Roundup covers key service launches and updates from the week of February 2, 2026.

• •Amazon Bedrock's Responses API adds server-side tool use (web search, code execution) and a 1-hour prompt caching TTL for AI agent workflows
• •SageMaker Unified Studio adds AWS PrivateLink for private VPC connectivity without public internet routing
• •Amazon S3 supports changing object encryption type via UpdateObjectEncryption API without data movement
• •Amazon Keyspaces introduces table pre-warming to eliminate cold-start delays for high-throughput workloads
• •EventBridge increases event payload size from 256 KB to 1 MB for richer event-driven architectures