Virtual machine Vs. Containerization Top Differences

Here is the difference between Containerization and VM (Virtual Machines). As Virtual Machines/Cloud computing/Containerization are hot in the market, knowing difference surely useful for interviews.

Virtual machine

  1. Need host operating system. On top of the host, you can create n number of VMs. You cannot share data among VMs.
  2. Each VM consumes CPU and RAM.
  3. Booting takes more time for Virtual Machines
  4. Moving the software applications (workloads) to the cloud is hard.
  5. Managing software licenses is expensive
  6. Security maintenance is laborious, since you need to take care of all the VMs.

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  1. Naturally, one operating system allows multiple containers.
  2. Plainly, one machine is enough to work with containers.. So, for containerization the need of resources is less.
  3. Software licensing cost is minimal.
  4. Portable in nature. You can easily port them from one server to another.
  5. Creating a container with the software- workload is easier.
  6. Moving software-workloads to the cloud is smoother. Containers very much needed for cloud migration, because of its ease of portability.
Virtual machinesContainerization
Hardware level virtualizationOS level virtualization
Heavy weightLight weight
Fully isolatedProcess level isolation
More secureLess secure
Poor performanceNative performance

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Author: Srini

Experienced software developer. Skills in Development, Coding, Testing and Debugging. Good Data analytic skills (Data Warehousing and BI). Also skills in Mainframe.