Maintenance is essential for keeping computer systems and networks operating smoothly. It involves tasks such as updating software, applying security patches, monitoring system performance, and troubleshooting hardware issues. Regular maintenance helps prevent system crashes, data loss, and security breaches. IT professionals also conduct routine backups, perform virus scans, and optimize system configurations to ensure optimal performance and reliability. Additionally, IT maintenance includes inventory management, tracking software licenses, and replacing outdated equipment. By prioritizing IT maintenance, organizations can minimize disruptions, enhance productivity, and protect their digital assets from potential threats.