Kubernetes

What Is Kubernetes?

Kubernetes (K8s) is the industry-standard container orchestration platform. While Docker packages applications in containers, Kubernetes manages running those containers at scale. Kubernetes handles deployment (getting containers running), scaling (increasing or decreasing replicas based on demand), self-healing (restarting failed containers), and rolling updates (deploying new versions without downtime).

Kubernetes abstracts away individual machines. Instead of deploying to specific servers, you declare desired state (I want 3 replicas of this service) and Kubernetes makes it happen, spreading containers across cluster machines intelligently. This abstraction enables massive scale: companies run millions of containers on Kubernetes clusters.

Kubernetes introduced new operational complexity: debugging container issues is harder, configuration can be verbose, learning curve is steep. But the benefits are enormous: automatic scaling, resilience, and operational efficiency. Most enterprises running containerized applications use Kubernetes or managed alternatives (AWS EKS, Google GKE, Azure AKS).