Imagine a data center with 100 physical servers. Without virtualization, you could run 100 apps. With virtualization, you could run 500 or more virtual servers (VMs) on those same 100 machines — each for a different customer or purpose.
| Concept | Explanation |
|---|---|
| 1. Virtual Machines (VMs) | Virtualization allows one physical server to run many virtual machines (VMs), each acting like a separate computer. |
| 2. Resource Sharing | CPU, memory, storage, and network are shared among VMs, making better use of hardware. |
| 3. Scalability | Cloud providers can quickly add or remove VMs based on demand, thanks to virtualization. |
| 4. Isolation | Each VM is isolated, so one user’s data and apps don’t interfere with another’s. |
| 5. Cost Efficiency | Multiple customers can share the same physical hardware, reducing costs. |
| 6. Flexibility | Users can run different operating systems and applications on the same physical server. |
| 7. Easy Backup & Recovery | VMs can be copied, moved, or restored easily, which helps in disaster recovery. |
| 8. Automation & Management | Virtualization platforms allow cloud providers to automate tasks like scaling, monitoring, and updates. |