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What is the Docker daemon and what role does it play?

Junior Docker
Quick Answer The Docker daemon (dockerd) is the background service that actually creates and manages containers, images, networks, and volumes. The Docker CLI talks to the daemon via a REST API. The daemon does all the heavy lifting — you just issue commands and it handles the rest.

Answer

The Docker daemon (dockerd) manages all Docker objects—containers, images, volumes, networks. It listens to the Docker API and executes client commands like building, running, or stopping containers.
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This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.

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