What is a key advantage of containerization over traditional virtual machines?

Containers are lightweight because they share the host OS kernel rather than requiring a full OS instance like VMs. This makes them faster to start, as only the application and its dependencies need to be initialized. Additionally, resource utilization is optimized as multiple containers can share system libraries, reducing overhead. Tools like Docker have revolutionized containerization by enabling consistent environments across development, testing, and production. For example, starting a container typically takes seconds compared to minutes for a VM, making it ideal for agile and CI/CD workflows. Why Other Options Are Incorrect :

1. Isolation levels : VMs provide hardware-level isolation, while containers provide process-level isolation.
2. Multiple kernels : Containers share a single kernel, unlike VMs which can run different OS kernels.
3. Dedicated hardware : Neither containers nor VMs require dedicated hardware.
4. Base images : Containers rely on base images for their runtime environment; this is incorrect.