The legitimate way to use AutoCAD portably is through , which allows you to draft, edit, and view designs directly in a 64-bit browser like Google Chrome or Mozilla Firefox without any installation. Key Features of the 64-bit Architecture
The 64-bit version of AutoCAD is designed to handle more complex data than its 32-bit predecessor.
A "portable" application generally refers to software that can run from a USB drive or external storage without being formally installed on a computer's registry. While unofficial "AutoCAD Portable" versions exist online, these are often modified, unlicensed, and carry significant security risks.