Docker: tool to run containers and build images
Containers: isolated entities that contain the application and it’s dependencies along the configurations that can easily run on a host
Images: blueprints that define what the container should contain and how the containers should function
Docker daemon: background process that is listening for the API call, and is responsible for interpreting it, and instructing its component to take action in the described way (follow the recipe)
ContainerD: container runtime interface, takes the instruction for container creation & managament. Also manages the image management Runc: feature of linux kernel that allows to isolate a running process C-group: feature of linux kernel that allows to allocate precise hardware resources to a running process