7z files use high-ratio compression (LZMA/LZMA2) to significantly reduce file size compared to standard ZIP files.
"Status Update: The archive has been successfully compiled and backed up. This volume contains all [Title] Season 2 assets in a high-compression format to save space." Key Information about .7z files: S02.7z
"Hi [Name], I've attached the file containing the [Season 2/Project Phase 2] materials. You will need a tool like 7-Zip or WinZip to extract it." Option 2: Requesting help with the file it may require a password.
These files often support AES-256 encryption , so if you cannot see the contents, it may require a password. S02.7z