A virtual machine, often called VM, is a core concept in cloud computing. Many beginners hear the term VM but are not sure what it actually means. This article explains virtual machines in simple words.
What is a Virtual Machine (VM)?
A virtual machine is a software-based computer that runs inside a physical server. It behaves like a real computer with its own operating system, memory, and storage.
What is a Virtual Machine in Cloud?
In cloud computing, a virtual machine runs on a cloud server instead of a personal computer. Multiple virtual machines can run on a single physical server using virtualization technology.
How Does a Virtual Machine Work?
A physical server uses special software to divide its resources into multiple virtual machines. Each virtual machine works independently, even though they share the same hardware.
Why Are Virtual Machines Used in Cloud?
Virtual machines allow efficient use of hardware and provide flexibility. They make cloud services scalable and cost-effective.
- Better use of server resources
- Easy creation and deletion
- Isolation between users
- Supports multiple operating systems
Virtual Machine vs Physical Computer
A physical computer runs directly on hardware. A virtual machine runs on software inside a physical server.
Virtual machines can be created, resized, or removed much faster than physical computers.
Simple Real-Life Example
Think of a large building divided into many apartments. The building is the physical server, and each apartment is a virtual machine. Each apartment works independently but shares the same building.
Where Are Virtual Machines Used?
- Hosting websites and applications
- Running business software
- Testing and development environments
- Government and enterprise systems
Final Conclusion
A virtual machine in cloud is a flexible and powerful way to run applications without owning physical hardware. It is one of the main reasons cloud computing is efficient and scalable.
Understanding virtual machines helps beginners understand how cloud infrastructure works.