A software update is a change to installed software that fixes bugs, upgrades components or improves performance. Usually updates consist of patches to fix specific issues, but can also include replacement files. Patches were common before larger storage media made it cheaper to replace entire files. Updates can be applied automatically, or they can be manually installed on individual devices or applications.
The most important reason to make software updates is to close security holes. Hackers and bad actors find ways to exploit vulnerabilities in software and use those loopholes to steal data, access systems or control devices. Without regular updates, these vulnerabilities remain open and can be used against the same people or devices over time.
Other reasons to keep software up to date include bug fixes, performance improvements and adding new features. Delaying software updates can cause users to work inefficiently, lose productivity and create additional costs. In some cases, a lack of updates can render a system obsolete or unusable.
Using software programs to manage software updates can save time and effort. These tools can monitor for updates and download them, and may offer features that allow administrators to schedule updates at convenient times. Some may even apply the updates to a large number of machines simultaneously.
For example, the free Software Informer tool can automatically download and apply updates to all of a user’s programs. It also offers settings to trigger updates at startup, set automatic updating, enable beta installations and change where downloaded update files are stored on the computer.