Docker Compose phù hợp local development, integration tests và môi trường nhỏ cần chạy nhiều services nhanh. Kubernetes phù hợp production hoặc platform cần orchestration, scaling, self-healing, rollout, service discovery và policy mạnh.
Không cần đưa mọi dự án nhỏ lên Kubernetes nếu team chưa cần complexity đó. Nhưng app đã container hóa tốt bằng Docker thường dễ đưa vào Kubernetes hơn nếu image stateless, config qua env/secret, health endpoints và logs chuẩn.
Docker Compose fits local development, integration tests and small environments that need to run multiple services quickly. Kubernetes fits production or platforms needing orchestration, scaling, self-healing, rollout, service discovery and stronger policy.
Not every small project needs Kubernetes before the team needs that complexity. But an app containerized well with Docker is usually easier to move to Kubernetes when the image is stateless, configured through env/secrets, has health endpoints and logs correctly.