Virtualization and containers let you run multiple operating systems or applications on a single physical machine, isolating each one so they don't interfere with each other. Virtualization creates entire virtual computers with their own operating systems, while containers package just the application and its dependencies in a lightweight bundle. Teams use these technologies to test software, run legacy programs alongside new ones, and make better use of server hardware.
The articles here explain how virtual machines and containers work differently, what trade-offs exist between them, and which tools fit different situations. You'll find information about popular platforms like Docker, Kubernetes, and hypervisors, along with guidance on choosing between virtualization approaches based on your performance needs, complexity tolerance, and what you're trying to run.