A hotfix is a quick solution or patch applied to software to address a specific issue, such as a bug or security vulnerability. Unlike regular updates, which may include new features or enhancements, hotfixes are typically released to resolve urgent problems that could affect the software's performance or security. Hotfixes are often deployed without extensive testing, allowing users to quickly benefit from the fix. They are commonly used in various software applications, including operating systems like Windows and software platforms like Linux, to ensure stability and security for users while minimizing downtime.