As the name suggests, it does not require installation. You can run the executable directly from a USB drive, making it a "cleaner" option for those who don't want persistent background services.
: Unlike some other activators, AAct does not require the .NET Framework to be installed on your system. Wide Compatibility aact v424 portable better
: It is lightweight and typically faster to use than more complex installation-based activators. As the name suggests, it does not require installation