Amazon EKS Introduces 99.99% SLA and Largest 8XL Tier for Provisioned Control Plane

AWS enhanced Amazon Elastic Kubernetes Service with a higher availability SLA and a new ultra-high capacity scaling tier for demanding workloads.

By Noah Ellis · Editorial pseudonym · 2026-03-20 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-03-20. Source published: 2026-03-20. Added to this archive: 2026-11-03. This briefing was prepared later from the linked announcement; it was not published on this website on the historical edition date.

The new 99.99% Service Level Agreement applies to clusters using the Provisioned Control Plane, improving on the previous 99.95% SLA. This higher reliability is measured with finer granularity to better support critical mission workloads.

Additionally, the 8XL scaling tier doubles the API server capacity of the previous 4XL tier, providing resources suitable for ultra-scale AI/ML training, HPC, and large data processing. Both advancements are broadly available in AWS regions offering Provisioned Control Plane clusters.

Source & further reading

Amazon EKS announces 99.99% Service Level Agreement and new 8XL scaling tier for Provisioned Control Plane clusters ↗

Source published 2026-03-20. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.