What is Docker primarily used for?

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Docker is primarily used for the containerization of applications. Containerization is a lightweight alternative to traditional virtualization, allowing applications to run in isolated environments (containers) that share the host operating system’s kernel. This approach packages the application code along with its dependencies, libraries, and environment configurations, ensuring that it runs consistently across different environments, such as development, testing, and production.

This functionality enables developers to swiftly create, deploy, and manage applications with greater efficiency and scalability. By separating applications from their underlying infrastructure, Docker allows developers to focus on writing code without worrying about system compatibility issues. This leads to improved portability and streamlined deployment processes.

In contrast, the other options relate to different aspects of IT and development. Virtualization of hardware refers to creating virtual machines that emulate physical hardware, which is distinct from the container approach Docker employs. Server management involves overseeing and maintaining physical or virtual servers, which does not specifically capture what Docker offers in terms of application deployment. Lastly, configuration management pertains to managing the settings and configurations of systems and software, which is a different aspect of IT operations, not directly tied to the core functionalities provided by Docker.

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