{"slug":"docker-vs-kubernetes)","title":"Docker vs Kubernetes","url":"https://www.aversusb.net/compare/docker-vs-kubernetes)","faqCount":5,"faqs":[{"question":"Do I need Kubernetes if I'm already using Docker?","answer":"Not necessarily. Docker alone is sufficient for development, testing, and small-scale deployments (1-10 hosts). You need Kubernetes when you have 50+ containers, require automatic scaling, need multi-region failover, or demand 99.9%+ uptime. Many teams use Docker with Docker Compose for local development and reserve Kubernetes for production."},{"question":"Can Kubernetes run without Docker?","answer":"Yes. While Docker popularized containerization, Kubernetes supports multiple container runtimes including containerd, CRI-O, and others. Major cloud providers (EKS, GKE, AKS) often use containerd instead of Docker daemon, though the OCI image format (Docker standard) remains universal."},{"question":"What's the typical total cost of ownership for Kubernetes vs Docker?","answer":"Docker: $0-50K/year (open-source, minimal infrastructure). Kubernetes: $100K-500K+/year including compute, storage, managed services (EKS $0.10/hour), and SRE team salaries ($120-180K). Cloud-managed K8s (GKE, AKS) reduces operational overhead by 60-70% vs self-hosted."},{"question":"Which has better security: Docker or Kubernetes?","answer":"Both are equally secure at the containerization layer. Kubernetes provides superior cluster-level security with RBAC, network policies, Pod Security Standards, and audit logging. Docker requires manual security implementation. Both need regular image scanning; Kubernetes integrates native scanning into admission controllers."},{"question":"Can I use Docker Swarm instead of Kubernetes?","answer":"Docker Swarm is simpler (easier to learn) but limited to ~100 nodes and lacks auto-scaling, self-healing, and multi-region support. Swarm suits teams with <20 containers; Kubernetes is required for enterprise scale. Most enterprises have migrated from Swarm to Kubernetes since 2019."}],"faqPageSchema":{"@context":"https://schema.org","@type":"FAQPage","@id":"https://www.aversusb.net/compare/docker-vs-kubernetes)#faq","url":"https://www.aversusb.net/compare/docker-vs-kubernetes)","inLanguage":"en-US","name":"Docker vs Kubernetes — FAQ","description":"Frequently asked questions about Docker vs Kubernetes","dateModified":"2026-07-09T04:11:20.843Z","author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"},"publisher":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"},"isPartOf":{"@type":"Article","@id":"https://www.aversusb.net/compare/docker-vs-kubernetes)#article"},"license":"https://creativecommons.org/licenses/by/4.0/","speakable":{"@type":"SpeakableSpecification","cssSelector":["#faq",".faq-item"]},"mainEntity":[{"@type":"Question","name":"Do I need Kubernetes if I'm already using Docker?","acceptedAnswer":{"@type":"Answer","text":"Not necessarily. Docker alone is sufficient for development, testing, and small-scale deployments (1-10 hosts). You need Kubernetes when you have 50+ containers, require automatic scaling, need multi-region failover, or demand 99.9%+ uptime. Many teams use Docker with Docker Compose for local development and reserve Kubernetes for production.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/docker-vs-kubernetes)"}},{"@type":"Question","name":"Can Kubernetes run without Docker?","acceptedAnswer":{"@type":"Answer","text":"Yes. While Docker popularized containerization, Kubernetes supports multiple container runtimes including containerd, CRI-O, and others. Major cloud providers (EKS, GKE, AKS) often use containerd instead of Docker daemon, though the OCI image format (Docker standard) remains universal.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/docker-vs-kubernetes)"}},{"@type":"Question","name":"What's the typical total cost of ownership for Kubernetes vs Docker?","acceptedAnswer":{"@type":"Answer","text":"Docker: $0-50K/year (open-source, minimal infrastructure). Kubernetes: $100K-500K+/year including compute, storage, managed services (EKS $0.10/hour), and SRE team salaries ($120-180K). Cloud-managed K8s (GKE, AKS) reduces operational overhead by 60-70% vs self-hosted.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/docker-vs-kubernetes)"}},{"@type":"Question","name":"Which has better security: Docker or Kubernetes?","acceptedAnswer":{"@type":"Answer","text":"Both are equally secure at the containerization layer. Kubernetes provides superior cluster-level security with RBAC, network policies, Pod Security Standards, and audit logging. Docker requires manual security implementation. Both need regular image scanning; Kubernetes integrates native scanning into admission controllers.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/docker-vs-kubernetes)"}},{"@type":"Question","name":"Can I use Docker Swarm instead of Kubernetes?","acceptedAnswer":{"@type":"Answer","text":"Docker Swarm is simpler (easier to learn) but limited to ~100 nodes and lacks auto-scaling, self-healing, and multi-region support. Swarm suits teams with <20 containers; Kubernetes is required for enterprise scale. Most enterprises have migrated from Swarm to Kubernetes since 2019.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/docker-vs-kubernetes)"}}]}}