Difference Between Containerization & Virtualization

Out of every ten applications, at least eight need to be hosted on another service provider’s infrastructure. The two most common techniques used for hosting these applications are virtualization and containerization. While both techniques have the same purpose, they have notable differences. Understanding their differences is crucial for every organization to choose the best hosting technique.

What is Containerization?

Containerization is the process of simulating a system’s OS only, according to the hosting requirements of the concerned application. There is no need to install different operating systems for different machines. Every container system needs to follow a certain architecture level, with each slab set via a hierarchical method.

  • The bottom layer comprises hardware units like disk storage, PC, CPU, and several networking interfaces.
  • In the second layer, you will find the kernel OS, whose main function is to bridge the gap between software and hardware.
  • Above the host OS layer is the slab of guest OS and the main container engine.
  • The top layer comprises libraries of each application meant to run on the OS.

Advantages of containerization

  • There is no need to write different code versions for various virtual machines.
  • With containerization, you can reduce redundancies and overheads
  • To streamline DevOps, the best hosting method is containerization.
  • With the help of containerization, you will be able to deploy the codes faster into the prod environment.
  • As the application stays isolated from hardware, containerization ensures a higher security level.

Disadvantages of Containerization

  • Containers designed for different operating systems need a concerned hosting provider.
  • If multiple machines use the same OS, security concerns can arise.

What is Virtualization?

Virtualization is the primitive hosting technology that simulates the entire hardware machine, including the CPU, networking routes, and OS. A single server is used for hosting multiple applications. However, developers need to optimize the app codes accordingly if different servers are used.

Several types of virtualizations act differently and allow you to run the applications with ease. These are:

i. Server virtualization
ii. OS virtualization
iii. Data virtualization
iv. Hardware virtualization

Advantages of Virtualization

  • With the help of virtualization, you can easily cut down the IT costs.
  • It helps in business continuity because the applications are hosted on virtual environments that can be switched from one server.
  • Virtualization can enhance both the productivity and efficiency of your enterprise operations.
  • With this technique, apps are hosted with no security concerns.
  • As the application stays isolated from hardware, containerization ensures a higher security level.

Disadvantages of Virtualization

  • Virtualization will require different code versions to be processed on several machines having different OS.
  • When virtual machines need to be moved from one data center to another, the task is more challenging.

Containerization VS Virtualization

Containerization Virtualization
Doesn’t offer isolation from the host OS and other virtual machinesIt will help run the application in an isolated manner, regardless of the host OS
It simulates only that part of the user-side OS that has all resources to run the appFor virtualization, you need to simulate all hardware
Host and guest OS needs to be the sameHost and guest OS can be different
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