Virtualization is the act of creating a virtual version of something which is not actual or real whereas Dockers is a computer program that performs operating-system-level virtualization, also known as “containerization”.
DEFINITION:
It is the act of creating a virtual version of something that is not real or actual. It just creates a virtual version of something using virtual computer hardware platforms, storage devices, and computer network resources and began in the 1960s, as a method of logically dividing the system resources provided by mainframe computers between different applications.
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TYPES:
Server Virtualization:
Consolidating multiple physical servers into virtual servers that may run on a single physical server.
Application Virtualization:
A program operates on a different host, from which it can be installed in a number of different ways. Web streaming, or VDI, or a VM kit may both be included.
Presentation Virtualization:
This is what Citrix Met frame, the ICA protocol as well as Microsoft Terminal Services and RDP were able to create. This kind of program runs on a different host, and what you see on the client is the computer where it is running.
Network and Storage Virtualization:
It has a variety of applications, including running a protocol analyzer within an Ethernet switch. The computers that are attached to the database facility have no idea where the data is. A common term used to describe it is abstracting logical storage from physical storage; additionally, a distributed storage facility consolidates and maintains the disk/data volume with the data.
Hardware Virtualization:
Lastly the creation of virtual machines that work as a real computer with an operating system. Software executed on the virtual machines is separated using the underlying resources. Moreover, virtualization helps in business and markets.