A software update is a process that improves or fixes a computer program or application. These updates can include new features, security patches, and bug fixes to enhance performance and user experience. Regular updates help ensure that the software remains compatible with other systems and devices. Users typically receive notifications when updates are available, and they can choose to install them manually or set their devices to update automatically. Keeping software up to date is important for maintaining security and functionality, especially for programs like operating systems and web browsers.