Portable Microsoft Office 365 Highly Compressed

Microsoft’s End User License Agreement (EULA) explicitly prohibits:

A completely free, open-source alternative that is natively designed to be portable and fits on a small USB drive. portable microsoft office 365 highly compressed

Use Microsoft 365 via the web (requires internet) or install Office properly on the host machine. There is no safe, legal, highly compressed portable version. highly compressed portable version.