What is Containerization?
It is a method of running software consistently in any environment by packaging it with all its dependencies and settings into a single lightweight package.
Overview
Containerization is a deployment approach that isolates applications from each other using operating system-level virtualization. The application is enclosed in a container package along with the code, libraries, and system tools required for it to run. Thus, the software runs with the exact same stability on a test or production server as it does on the developer's computer.
How it works
The requirements needed by the application are specified in a configuration file, and a container image is created. The container engine derives lightweight and isolated workspaces from this image by sharing the operating system kernel. Thus, each container starts up in seconds compared to a separate virtual machine.
Where it is used
It is widely preferred in microservices architectures, cloud computing infrastructures, and continuous integration/deployment (CI/CD) pipelines.
Commonly confused with
It is confused with traditional virtualization. While virtual machines install a full operating system every time, containerization shares the kernel of the existing operating system and is much more lightweight.
Questions and answers
What is the most common tool for containerization?
Docker is the industry standard for creating and running containers, while Kubernetes is the standard for managing thousands of containers.
Are containers secure?
Although they do not provide absolute isolation like virtual machines because they share the operating system kernel, they are quite secure with properly configured firewalls and authorizations.
Related terms
This explanation was written in plain language for TreScout with AI and machine-translated from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to hello@trescout.com. Read in Turkish →