The "full story" regarding a standalone Apple Configurator 2 download link is that an official direct download link from Apple does not exist
You may find "DMG links" on forum posts or file-sharing sites, but using these carries significant risks: Security Threats: apple configurator 2 dmg file download link
If you encounter any issues while downloading or installing Apple Configurator 2, here are some troubleshooting tips: The "full story" regarding a standalone Apple Configurator
I understand you’re looking for a direct or official download link for the .dmg file. However, I should clarify a few important points before providing guidance — especially since you mentioned wanting a “long paper” on the topic. I’ll provide a thorough explanation of where to find it, why direct DMG links are uncommon, and how to obtain the software legitimately. The Official Source: The Mac App Store Apple