A use-case-driven technical comparison of Devtron and Harness for Kubernetes-first organizations, covering six key scenarios: multi-cluster onboarding, AI-assisted Day-2 debugging, DevSecOps integration, Helm fleet management, backup/disaster recovery, and developer self-service. The core architectural distinction is that Devtron is Kubernetes-native (kubeconfig-based, no mandatory per-cluster agent), while Harness is a multi-runtime platform requiring per-cluster GitOps agents and Delegates. Devtron includes security scanning, backup, DORA metrics, and AI chat debugging in its base platform, whereas Harness offers these as separately licensed modules. Harness is positioned as the stronger choice for organizations managing diverse runtimes (VMs, bare metal, ECS). The comparison is authored by Devtron.