Retiring EKS When Program Demand Shifts

Two orchestrators, two jobs

Kubernetes fit multi-tenant shared services — Moodle, JupyterHub, intranet, monitoring. ECS Fargate fit a national telecom LMS with payment microservices and tight per-service autoscaling. Using both over time is normal; keeping both forever is not.

The rationalization arc

• EKS platform era — ~$2,660/mo average when multi-program demand was high
• EKS retired Dec 2025 — trough ~$1,612 as programs wound down
• ECS production ramp for flagship client — Feb–Jun 2026
• ~47% org spend reduction peak to trough

How to talk about it

Retiring infrastructure when demand shifts is sound platform strategy. Lead with the optimization delta and which production paths remained — not guilt about past Kubernetes investment.