AWS Weekly Roundup: Anthropic & Meta partnership, AWS Lambda S3 Files, Amazon Bedrock AgentCore CLI, and more (April 27, 2026)

AWS and Anthropic deepened their product collaboration this week, with Anthropic now training its most advanced foundation models on AWS Trainium and Graviton infrastructure and launching Claude Cowork within Amazon Bedrock for enterprise teams. Meta also signed an agreement to deploy tens of millions of AWS Graviton cores to power agentic AI workloads, while AWS Lambda introduced the ability to mount S3 buckets as file systems using S3 Files for AI and machine learning workloads.

AWS News Blog https://aws.amazon.com/blogs/aws/ AWS Weekly Roundup: Anthropic & Meta partnership, AWS Lambda S3 Files, Amazon Bedrock AgentCore CLI, and more April 27, 2026 | | Late March took me to Seattle for the Specialist Tech Conference, one of the most energizing gatherings of AWS specialists from around the world. It was an incredible opportunity to connect with peers, exchange experiences, and go deep on the latest advancements in Generative AI and Amazon Bedrock — and a powerful reminder of something I truly believe in: when specialists come together to challenge each other, explore edge cases, and co-create solutions, the impact goes far beyond the meeting room. In a fast-moving space like AI, having a strong internal community isn’t a nice-to-have — it’s a competitive advantage. Now, let’s get into this week’s AWS news… Headlines Anthropic partnership: Claude on AWS Trainium and Graviton, and Claude Cowork in Amazon Bedrock https://aws.amazon.com/bedrock/claude/ – This week, AWS and Anthropic deepened their product collaboration in meaningful ways for builders. Anthropic is now training its most advanced foundation models on AWS Trainium and Graviton infrastructure, co-engineering directly at the silicon level with Annapurna Labs to maximize computational efficiency from the hardware up through the full stack. Claude Cowork is now available in Amazon Bedrock https://aws.amazon.com/blogs/machine-learning/from-developer-desks-to-the-whole-organization-running-claude-cowork-in-amazon-bedrock/ — Claude Cowork brings Anthropic’s collaborative AI capabilities directly to enterprise builders within the AWS ecosystem, enabling teams to work alongside Claude as a true collaborator, not just a tool. You can now deploy Claude Cowork within your existing Amazon Bedrock environment, keeping your data secure within AWS while leveraging the full power of Claude for team-based AI workflows. Claude Platform on AWS https://aws.amazon.com/claude-platform/ Coming soon — A unified developer experience to build, deploy, and scale Claude-powered applications without leaving AWS. If you’re building with Generative AI on AWS, this is a significant step forward in what you’ll be able to do with Claude directly through Amazon Bedrock. Meta signs agreement with AWS to power agentic AI on Amazon’s Graviton chips https://www.aboutamazon.com/news/aws/meta-aws-graviton-ai-partnership — Meta has signed an agreement to deploy AWS Graviton processors at scale, starting with tens of millions of Graviton cores to power CPU-intensive agentic AI workloads — including real-time reasoning, code generation, search, and multi-step task orchestration. Last week’s launches Here are some launches and updates from this past week that caught my attention: AWS Lambda functions can now mount Amazon S3 buckets as file systems with S3 Files https://aws.amazon.com/about-aws/whats-new/2026/04/aws-lambda-amazon-s3/ — You can now mount Amazon S3 buckets as file systems in AWS Lambda using S3 Files, enabling your functions to perform standard file operations without downloading data for processing. Built on Amazon EFS, S3 Files provides the simplicity of a file system with the scalability, durability, and cost-effectiveness of S3 — and multiple Lambda functions can connect to the same file system simultaneously, sharing data through a common workspace. This is particularly valuable for AI and machine learning workloads where agents need to persist memory and share state across pipeline steps. Amazon EKS Hybrid Nodes gateway for hybrid Kubernetes networking https://aws.amazon.com/about-aws/whats-new/2026/04/amazon-eks-hybrid-nodes-gateway/ — Amazon Elastic Kubernetes Service now offers the Amazon EKS Hybrid Nodes gateway, which automates networking between your EKS cluster VPC and Kubernetes Pods running on EKS Hybrid Nodes. You can now eliminate the need to make on-premises pod networks routable or coordinate network infrastructure changes, greatly simplifying hybrid Kubernetes environments. The gateway automatically enables pod-to-pod traffic across cloud and on-premises environments, control plane-to-webhook communication, and connectivity for AWS services like Application Load Balancers, and is available at no additional charge. Amazon Aurora Serverless: Up to 30% better performance, smarter scaling, and still scales to zero https://aws.amazon.com/about-aws/whats-new/2026/04/aurora-serverless-smarter-scaling/ — Amazon Aurora Serverless just got faster and smarter, with up to 30% better performance than the previous version and an enhanced scaling algorithm designed to handle workloads where multiple tasks compete for resources — like busy APIs and agentic AI applications with bursts of activity and long idle windows. You can now run even more demanding workloads serverlessly, paying only for what you use, and automatically scaling to zero when not in use. All improvements are available in platform version 4 at no additional cost. Amazon Bedrock AgentCore adds new features to help developers build agents faster https://aws.amazon.com/about-aws/whats-new/2026/04/agentcore-new-features-to-build-agents-faster/ — Amazon Bedrock AgentCore introduces a managed harness preview , the AgentCore CLI, and AgentCore skills for coding assistants, helping developers go from idea to working agent prototype faster. The managed harness lets you define an agent by specifying a model, system prompt, and tools and run it immediately with no orchestration code required — and when you’re ready for full control, you can export the harness orchestration as Strands-based code. The AgentCore CLI deploys your agents with the governance and auditability of infrastructure-as-code AWS CDK today, Terraform coming soon , and is available in 14 AWS Regions at no additional charge. For a full list of AWS announcements, be sure to keep an eye on the What’s New with AWS https://aws.amazon.com/new/ page. Other AWS news Here are some additional posts and resources that you might find interesting: Introducing granular cost attribution for Amazon Bedrock https://aws.amazon.com/blogs/machine-learning/introducing-granular-cost-attribution-for-amazon-bedrock/ — This post walks through how Amazon Bedrock’s granular cost attribution works and covers practical example cost tracking scenarios. You can now tag and track Bedrock usage costs at a finer level of detail — useful for organizations running multiple teams or projects on Bedrock who need precise cost visibility and chargeback capabilities. Automating Incident Investigation with AWS DevOps Agent and Salesforce MCP Server https://aws.amazon.com/blogs/devops/automating-incident-investigation-with-aws-devops-agent-and-salesforce-mcp-server/ — This post co-written with Salesforce shows how AWS DevOps Agent, integrated with the Salesforce MCP Server, automates the full lifecycle of infrastructure incident investigation — from identifying issues and diagnosing root causes to notifying customers through Salesforce Service Cloud. It’s a compelling real-world example of how AI agents and MCP-based tool connectivity are reshaping DevOps workflows in production, dramatically reducing mean time to resolution. Microcredentials from AWS are now free — Here’s why that matters https://aws.amazon.com/blogs/training-and-certification/microcredentials-from-aws-are-now-free-heres-why-that-matters/ — You can now access AWS microcredentials at no cost through AWS Skill Builder in all countries where the platform is offered. Unlike traditional multiple-choice certifications, microcredentials are hands-on assessments that place builders in simulated business scenarios where they configure, troubleshoot, and optimize directly in a live AWS environment — the same way they would on the job. A great opportunity to validate real cloud skills without a cost barrier. Amazon SageMaker AI now supports optimized generative AI inference recommendations https://aws.amazon.com/blogs/machine-learning/amazon-sagemaker-ai-now-supports-optimized-generative-ai-inference-recommendations/ — You can now use Amazon SageMaker AI to automatically identify optimized deployment configurations for your generative AI models, including instance type, container, and inference parameters. This new capability takes the guesswork out of tuning inference infrastructure, helping you reduce costs and improve latency for your AI applications in production. Upcoming AWS events Check your calendar and sign up for upcoming AWS events: What’s Next with AWS https://aws.amazon.com/events/ — Tune in on April 28 for What’s Next with AWS, a virtual event featuring the latest announcements and product updates directly from AWS teams. A great opportunity to get up to speed on what’s new before diving into the week’s launches. AWS Summits https://aws.amazon.com/events/summits/ — AWS Summits are free in-person events where you can explore the latest in cloud and AI innovation, learn best practices, and network with builders and experts. Coming up in May: Singapore https://aws.amazon.com/events/summits/singapore/ May 6 , Tel Aviv https://aws.amazon.com/events/summits/tel-aviv/ May 6 , Warsaw https://aws.amazon.com/events/summits/warsaw/ May 6 , Stockholm https://aws.amazon.com/events/summits/stockholm/ May 7 , Sydney https://aws.amazon.com/events/summits/sydney/ May 13–14 , Hamburg https://aws.amazon.com/ko/events/summits/seoul/ May 20 , Seoul https://aws.amazon.com/ko/events/summits/seoul/ May 20 , Amsterdam https://aws.amazon.com/events/summits/amsterdam/ May 27 , Bangkok https://aws.amazon.com/events/summits/ May 28 , Milan https://aws.amazon.com/it/events/summits/milano/ May 28 , and Mumbai https://aws.amazon.com/events/summits/mumbai/ May 28 . And in June, join us in Los Angeles June 10 . Check the full schedule and register at the link above. AWS Community Days https://aws.amazon.com/developer/community/community-days/ — Community-led conferences where content is planned, sourced, and delivered by community leaders, featuring technical discussions, workshops, and hands-on labs. Upcoming events include Athens, Greece April 28 , Vancouver, Canada May 1 , İstanbul, Türkiye May 9 , and Panama City, Panama May 23 . If you’re in Latin America, mark your calendar for the AWS Community Day Belo Horizonte August 22 — registration is open at awscommunityday.com.br https://awscommunityday.com.br/ . Join the AWS Builder Center https://builder.aws.com/ to connect with builders, share solutions, and access content that supports your development. Browse here https://aws.amazon.com/events/ for upcoming AWS-led in-person and virtual events and developer-focused events. That’s all for this week. Check back next Monday for another Weekly Roundup — Daniel Abib This post is part of our Weekly Roundup series. Check back each week for a quick roundup of interesting news and announcements from AWS