The biggest advantage is that if you have to share the encrypted file, then the recipients don't need 7-Zip specifically; most archive managers can open encrypted ZIP files (though they'll still ...

The encrypted communications system used by the ANC around 1990, which was stored in this ZIP file, is available in a GitHub repository by Tim Jenkin .

Occasionally, you'll need to open several compressed files from one ZIP folder. While Windows does a fine job extracting, there are better tools to unzip.