Docker is a containerization platform that packages an application and its dependencies into lightweight, portable containers. Unlike virtual machines (VMs), which virtualize an entire operating system, Docker containers share the host OS kernel while keeping each application isolated.
The key differences:
Containers use fewer resources, because they share the host kernel.
Containers start in seconds, while VMs take minutes.
Containers run the same way across different environments.
VMs give stronger isolation, but at a higher overhead cost.
Rewriting in plainer words…
This answer doesn't lend itself to a diagram - it reads best . No credits were charged.
