AWS News Blog
Top announcements of AWS re:Invent 2025
Discover our most impactful innovations across analytics, AI, compute, containers, security, and more throughout the conference week.
Amazon Bedrock adds reinforcement fine-tuning simplifying how developers build smarter, more accurate AI models
Amazon Bedrock now supports reinforcement fine-tuning delivering 66% accuracy gains on average over base models.
New serverless customization in Amazon SageMaker AI accelerates model fine-tuning
Accelerate AI model development with new training features that enable rapid recovery from failures and automatic scaling based on resource availability.
Introducing checkpointless and elastic training on Amazon SageMaker HyperPod
Accelerate AI model development with new training features that enable instant recovery from failures and automatic scaling based on resource availability.
Announcing replication support and Intelligent-Tiering for Amazon S3 Tables
New features enable automatic cost optimization through intelligent storage tiering and simplified table replication across AWS Regions and accounts.
Amazon S3 Storage Lens adds performance metrics, support for billions of prefixes, and export to S3 Tables
New capabilities help optimize application performance, analyze unlimited prefixes, and simplify metrics analysis through S3 Tables integration.
Amazon Bedrock AgentCore adds quality evaluations and policy controls for deploying trusted AI agents
Deploy AI agents with confidence using new quality evaluations and policy controls—enabling precise boundaries on agent actions, continuous quality monitoring, and experience-based learning while maintaining natural conversation flows.
Build multi-step applications and AI workflows with AWS Lambda durable functions
New Lambda capability lets you build applications that coordinate multiple steps reliably over extended periods—from seconds to up to one year—without paying for idle compute time when waiting for external events or human decisions.
New capabilities to optimize costs and improve scalability on Amazon RDS for SQL Server and Oracle
Manage development, testing, and production database workloads more efficiently with new features including Developer Edition support for SQL Server, M7i/R7i instance support with optimize CPU, and expanded storage options up to 256 TiB.







