What is Containerization?

Containerisation is a type of virtualization strategy that emerged as an alternative to traditional hypervisor-based virtualization.

In containerization, the operating system is shared by the different containers rather than cloned for each virtual machine. For example Docker provides a container virtualization platform that serves as a good alternative to hypervisor-based arrangements.

Why are Containers used in Microservices?

Containers are useful technologies for allocating and sharing resources. It is considered the most effective and easiest method for managing microservice-based applications to develop and deploy them individually. Using Docker, you may also encapsulate a microservice along with its dependencies in a container image, which can then be used to roll on-demand instances of the microservice without any additional work.

Docker generally provides a container environment, in which any application can be hosted. This is accomplished by tightly packaging both the application and the dependencies required to support it. These packaged products are referred to as Containers, and since Docker is used to doing that, they are called Docker containers. Docker, in essence, allows you to containerize your microservices and manage these microservices more easily.