The Ctrl + Alt + Delete command in Windows operating systems serves multiple purposes, primarily related to managing system tasks and troubleshooting. Initially designed to access the task manager, this command allows users to view running applications, terminate unresponsive programs, and monitor system performance. It also provides a secure way to log in or lock the computer, enhancing security. Ultimately, this combination functions as a crucial tool for users to regain control over their operating system when faced with issues.