Iys-aied.7z.008 -

To use this file, you must have all preceding parts (001 through 007) in the same folder, as a single segment cannot be opened on its own. How to Extract the Archive 7z.001 7z.002 7z.003 help please - SourceForge

The file is the eighth segment of a multi-part 7-Zip archive . The "AIed" in the name likely refers to Artificial Intelligence in Education . IYS-AIed.7z.008