Why Duolingo Abandoned ECS for Kubernetes: Lessons from the Trenches

Senior Platform Engineer Franka Passing shares Duolingo's experience migrating 500+ microservices from AWS ECS to Kubernetes. The video covers motivations for the switch (advanced deployment strategies, open-source ecosystem access), technical challenges including IPv6-only networking and cloud rate limits, and cultural aspects like overcoming recency bias during incidents. Target audience includes platform engineers, SREs, and DevOps professionals managing large-scale containerized infrastructure.