Docker vs Kubernetes - when do you actually need Kubernetes?

Senior DevOps engineer here. Great question, and honestly Kubernetes is over-adopted by many companies. **When you DON'T need Kubernetes:** - Less than 10-15 services - Small team (under 5-10 devs) - Simple scaling needs - Limited traffic variability - You don't have DevOps expertise For your 10 microservices at a startup? Probably overkill. **When Kubernetes makes sense:** - 50+ services - Need auto-scaling based on traffic - Multi-cloud or hybrid deployments - Large team with dedicated DevOps - Complex deployment strategies (canary, blue-green) - Compliance requirements for isolation - High availability is critical **Better alternatives for your scale:** **1. Docker Compose + Swarm** - You already know Docker - Swarm is built-in and way simpler - Handles 10 services easily **2. AWS ECS/Fargate** - Managed container orchestration - No cluster management - Scales well - Lower ops overhead **3. Google Cloud Run / AWS App Runner** - Fully managed - Just give it containers - Pay per request - Great for small-medium scale **4. Railway/Render/Fly.io** - Heroku-like simplicity - Container native - Perfect for startups **The honest take:** Kubernetes was built by Google for Google-scale problems. Most companies don't have Google-scale problems. I've seen startups spend 6 months setting up Kubernetes when ECS would've taken a week. Learn K8s for career growth, but don't implement it just to have it on your resume. What problems are you actually trying to solve? Start there.