AOMEI Partition Assistant is a disk partition management utility for Windows that helps users create, resize, move, merge, split, format, convert, and otherwise manage disk partitions without data loss. Many users install the free edition for basic tasks, but AOMEI also offers paid editions (Professional, Server, Technician, etc.) that unlock advanced features. A “license code” (also called a license key, product key, activation code, or serial number) is the string provided when you purchase a paid edition; entering it into the application converts the software from trial or free mode to the paid edition and activates licensed features.