Kubernetes vs. ECS: Balancing Ease, Cost, and Scalability for Small-Scale Deployments

Introduction: Reevaluating Kubernetes for Small-Scale Deployments The conventional wisdom that Kubernetes is overkill for small-scale setups is being challenged by evolving technical and economic realities. Historically, Amazon ECS dominated this space due to its seamless integration with AWS and perceived simplicity. However, as a platform engineer who recently migrated a monolithic EC2 instance and Keycloak from ECS to Kubernetes, I observed that Kubernetes’ reduced barrier to entry—coupled with its declarative architecture and cloud-agnostic design—now offers tangible advantages for modest deployments. This shift became evident when scaling beyond two services, as ECS’ tightly coupled AWS dependencies introduced operational friction and cost inefficiencies. Kubernetes’ adoption is no longer hindered by complexity. Deploying a Grafana stack via Helm, for instance, requires a single command, whereas ECS demands manual configuration across task definitions, load balancers, and EventBri