December 10, 2025

AWS re:Invent 2025 Recap Part 3/4 - EKS & Cloud Operations

17 minutes

Part 3 of our AWS re:Invent 2025 series. AWS transforms Kubernetes into an AI infrastructure platform with massive scale and AI-native operations.

In this episode:

- EKS Ultra Scale: 100,000 nodes per cluster (vs 15K GKE, 5K AKS)—1.6 million Trainium accelerators or 800K GPUs in a single cluster

- AWS replaced etcd's Raft consensus with their internal "journal" system and moved to in-memory storage for 500 pods/sec at 100K scale

- Anthropic using EKS Ultra Scale for Claude training, improving latency KPIs from 35% to 90%+

- EKS Capabilities: Fully managed Argo CD, AWS Controllers for Kubernetes (200+ CRDs for 50+ services), Kube Resource Orchestrator

- EKS MCP Server: Natural language Kubernetes management—"show me all pods not running" instead of kubectl

- EKS Provisioned Control Plane: XL/2XL/4XL tiers ($1.65-$6.90/hr), 4XL supports 40K nodes

- CloudWatch Gen AI Observability: LangChain, LangGraph, CrewAI agent tracing

- DevOps Agent (Preview): Autonomous on-call engineer—Kindle saw 80% time savings

- CloudWatch unified data store with S3 Tables, OCSF, Apache Iceberg

📰 News Segment Links:

• cert-manager v1.19.2 CVE Patches (CVE-2025-61727, CVE-2025-61729)

https://github.com/cert-manager/cert-manager/releases/tag/v1.19.2

• cert-manager v1.18.4 Backport

https://github.com/cert-manager/cert-manager/releases/tag/v1.18.4

• Canonical Extends Kubernetes Long-Term Support to 15 Years

https://thenewstack.io/canonical-extends-kubernetes-long-term-support-to-15-years/

• OpenTofu 1.11 with Ephemeral Resources

https://github.com/opentofu/opentofu/releases/tag/v1.11.0

• Cloudflare Shift-Left Enterprise IaC

https://blog.cloudflare.com/shift-left-enterprise-scale/

🔗 Main Content Sources:

• EKS Ultra Scale 100K Nodes

hhttps://aws.amazon.com/blogs/containers/under-the-hood-amazon-eks-ultra-scale-clusters/

• EKS Capabilities Announcement

https://aws.amazon.com/blogs/aws/announcing-amazon-eks-capabilities-for-workload-orchestration-and-cloud-resource-management/

• EKS MCP Server

https://aws.amazon.com/blogs/containers/introducing-the-fully-managed-amazon-eks-mcp-server-preview/

• EKS Provisioned Control Plane

https://aws.amazon.com/blogs/containers/amazon-eks-introduces-provisioned-control-plane/

• Cloud Operations Top 10 Announcements

https://aws.amazon.com/blogs/mt/2025-top-10-announcements-for-aws-cloud-operations/

• AI-driven Operations at re:Invent

https://aws.amazon.com/blogs/mt/embracing-ai-driven-operations-and-observability-at-reinvent-2025/

Perfect for platform engineers, SREs, DevOps engineers, and cloud architects looking to level up their platform engineering skills.

Episode URL: https://platformengineering.org/podcasts/00051-aws-reinvent-2025-eks-cloud-operations

Series: AWS re:Invent 2025 (Part 3 of 4)

Episode URL: https://platformengineeringplaybook.com/podcasts/00051-aws-reinvent-2025-eks-cloud-operations

Part 1: The Agentic AI Revolution - https://platformengineeringplaybook.com/podcasts/00049-aws-reinvent-2025-agentic-ai-revolution

Part 2: Infrastructure & Developer Experience - https://platformengineeringplaybook.com/podcasts/00050-aws-reinvent-2025-infrastructure-developer-experience

Category: Technology

Subcategory: Software How-To

Keywords: AWS, re:Invent 2025, EKS, Kubernetes, EKS Ultra Scale, EKS Capabilities, Argo CD, ACK, MCP Server, CloudWatch, DevOps Agent, AIOps, platform engineering

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