By Channy Yun (윤석찬) on 07 SEP 2026 in Amazon Bedrock, Amazon EC2, Amazon Redshift, AWS Lambda, AWS Training and Certification, News, Security, Identity, & Compliance
Last week, Claude Fable 5.1 landed on AWS. Anthropic describes it as delivering frontier intelligence for ambitious work across coding, scientific research, and enterprise workflows. The model is built for long-running, high-stakes tasks that can take hours and span many applications. It can take on more of a software project by itself, handling features across an entire codebase, code review, and performance work over extended sessions.
Anthropic has classified Fable 5.1 as a Covered Model, a category of Claude models that come with extra data retention, safety review, and access policies wherever they’re offered. Claude Fable 5.1 is subject to data retention for up to 30 days and human review by Amazon personnel, with a new aws_review data retention mode. In this mode, AWS keeps your prompts and outputs for human safety review within the AWS boundary. The provider_data_share mode is legacy, and Amazon Bedrock does not share your data with the model provider. Additionally, Enterprise Frontier Safeguards (EFS), built in partnership between AWS and Anthropic, will allow eligible customers to use Covered Models while keeping their data in a cloud environment they control.
There are two ways to access Claude Fable 5.1: through Amazon Bedrock or the Claude Platform on AWS. For details, check out the Claude Fable 5.1 model card on Amazon Bedrock and the Claude Platform on AWS.
Last Week’s Launches
Here are a few launches that caught my attention:
- Amazon Linux 2027 (AL2027) in public preview: AL2027 is the next version of the Amazon Linux operating system. It runs on kernel 7.1+ and is purpose-built for cloud-native workloads on AWS, with performance, scale, and security in mind. Building on the AL2023 baseline, AL2027 is designed for customers who need a secure, stable, AWS-native operating system to run web applications, databases, containerized microservices, AI/ML workloads, and large-scale infrastructure.
- Amazon EC2 R9g and R9gd memory-optimized instances: Powered by AWS Graviton5 processors, these instances deliver the best price performance for memory-intensive workloads on Amazon EC2. R9g and R9gd instances offer up to 25% better compute performance compared to Graviton4-based R8g and R8gd instances. They’re up to 30% faster for databases, up to 35% faster for web applications, and up to 35% faster for machine learning. To learn more, read Daniel’s blog post.
- AWS Lambda SnapStart for container image functions: Lambda SnapStart is an opt-in capability that simplifies building highly responsive and scalable applications without provisioning resources or doing complex performance tuning. Previously, SnapStart only supported managed runtimes (Python, .NET, and Java). Now you can use SnapStart for container images to cut startup times from several seconds down to sub-second for latency-sensitive workloads like ML inference and interactive APIs.
- AWS Agent Registry now generally available: AWS Agent Registry offers a private, governed catalog and discovery layer for agents, tools, skills, MCP servers, and custom resources within your organization. Beyond the capabilities introduced in preview (manual and URL-based record creation, approval workflows, semantic and keyword search, and AWS CloudTrail audit trails), Registry now adds new enterprise features. To learn more, visit the AI Blog post.
- Amazon Redshift now supports Apache Iceberg v3 tables: You can now read from and write to Apache Iceberg v3 tables in your Amazon Redshift data lake. This launch brings support for default column values, row lineage, and deletion vectors. Amazon Redshift’s Graviton-based provisioned and serverless clusters support the new v3 format. To learn more, visit Apache Iceberg v3 features in Redshift.
For a complete list of AWS announcements, keep an eye on the What’s New with AWS page.
Other AWS News
Here are some additional projects and news items you might find interesting:
- AWS named a Leader in the 2026 Gartner Magic Quadrant for Strategic Cloud Platform Services: For the 16th consecutive year, Gartner has recognized AWS as a Leader in the 2026 Gartner Magic Quadrant for Strategic Cloud Platform Services, and once again placed AWS highest on the Ability to Execute axis. We believe this recognition reflects our commitment to delivering the broadest and deepest set of cloud capabilities—from infrastructure and AI to security and operations—so you can build, innovate, and scale with confidence.
- AWS Certified AI Business Strategist: This new certification is aimed at professionals who evaluate, champion, and scale AI initiatives within their organizations: line-of-business leaders driving adoption across their teams, sales professionals articulating AI value to customers, consultants guiding client strategy from experimentation through production, and program managers aligning AI investments to business outcomes. Beta exam registration opened September 1, 2026, with exam delivery beginning September 29.
- Agentic Security: Detection and Response at Machine Speed: We believe security should evolve ahead of AI adoption, not behind it. That belief led our team to collaborate with the SANS Institute on a new chapter in the 2026 Cloud Security Exchange eBook, where we lay out a practical framework for securing agentic workloads at enterprise scale. Our chapter goes deeper on securing agentic workloads, with specific architectural patterns, implementation guidance, and frameworks for security teams at every stage of agentic AI maturity—whether you’re evaluating, piloting, or operating at scale.
For a full list of AWS blog posts, keep an eye on the AWS Blogs page.
To learn more about AWS, browse and join upcoming AWS-led in-person and virtual events, startup events, and developer-focused events including AWS re:Invent, AWS Summits, and AWS Community Days. Join the AWS Builder Center to connect with builders, share solutions, and access content that supports your development.
That’s all for this week. Check back next Monday for another Weekly Roundup! — Channy
Tags: Week in Review
Channy Yun (윤석찬) is a Lead Blogger of the AWS News Blog and Principal Developer Advocate for AWS Cloud. As an open web enthusiast and blogger at heart, he loves community-driven learning and sharing technology.
