Docker follows a client-server architecture with these main components:

• Docker Client: Command-line interface that communicates with Docker daemon
• Docker Daemon (dockerd): Background service managing containers, images, and networks
• Docker Images: Read-only templates used to create containers
• Docker Containers: Running instances of Docker images
• Docker Registry: Storage for Docker images (e.g., Docker Hub)
• Docker Engine: Complete containerization platform combining daemon, REST API, and CLI