What is system administration?

System administration is the process of managing, maintaining, and supporting computer systems and servers within an organization. System administrators (sysadmins) are responsible for tasks such as installing and updating software, managing user accounts, ensuring security, monitoring system performance, and troubleshooting issues. Their work ensures that IT infrastructure runs efficiently, securely, and with minimal downtime. Sysadmins often handle both hardware and software components, supporting business operations and user needs.