Docker has revolutionized software development by making application deployment fast, efficient, and scalable. But many developers ask: 👉 Does Docker need a hypervisor to run? The answer depends on your operating system. Let’s dive deep into how Docker works on Linux, Windows, and macOS. 🛠️ Containers vs. Virtual Machines: What’s the Difference? Before answering the hypervisor question, let's clarify the difference between containers and virtual machines (VMs) . Feature Virtual Machines (VMs) Docker Containers Isolation                          Fully isolated OS per VM                    Process-level isolation Guest OS Each VM has its own OS No separate OS, shares host kernel Performance Heavy, slower boot times Lightweight, near-instant start Hypervisor? Required Not required (on Linux) Docker uses containers instead of full OS virtualization, making it...