Often achieves 30-70% better compression than ZIP and 2-10% better than many other formats.

Provides high-level security by encrypting both the data and the filenames , preventing unauthorized users from seeing what is inside the archive without a password.

Capable of handling archives up to 16 billion GB (16 exbibytes) in size.

Can use multiple CPU cores simultaneously to speed up the compression process. Comparisons Compression Ratio High (LZMA/LZMA2) Moderate (Deflate) Encryption AES-256 (Strong) Standard (Often weaker) Compatibility Needs 7-Zip or WinZip Native in most OS Open Source Yes (GNU LGPL) Yes (Public Domain)

The file format, utilized by the 7-Zip archiver, is an open-source, high-efficiency compression standard. Its primary feature is the LZMA and LZMA2 compression algorithms , which provide significantly higher compression ratios than standard ZIP formats, especially for large datasets or files with redundant data. Core Features of 7z

Combines multiple files into a single "solid" block, allowing the algorithm to find redundancies across different files for even smaller archive sizes.

7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Does 7z compress better than zip? - Microsoft Community Hub