123mkv cloud is not a single, official cloud platform like Google Drive or Dropbox. Instead, it is typically a reference to a network of file-hosting links and indexing websites (often operating under domain names like 123mkv.* ) that aggregate and provide access to compressed movie files. These files are stored on third-party cyberlockers (e.g., Solidfiles, Clicknupload, or 1Fichier) and organized by the 123mkv brand.
A single movie on 123mkv cloud might have 6 different download links: