Containerization primarily aims to do what in virtualization?

Containerization primarily aims to reduce resource usage in virtualization. It allows applications to run in isolated environments, known as containers, which share the same operating system kernel but operate independently of each other. This makes containers lightweight compared to traditional virtual machines, which require a full OS stack for each instance. By using fewer resources, such as CPU and memory, containers can be deployed more efficiently, allowing for more applications to run on a given server compared to virtual machines.

Additionally, this efficiency means that containerized applications can start up and scale much more quickly, contributing to improved performance and flexibility in deployment. While increasing security, enhancing data retrieval speeds, and improving user interfaces are important objectives in many IT practices, they are not the primary goals of containerization. Containerization focuses specifically on resource optimization, making it a crucial technique for managing modern applications and microservices effectively.