= = = server based = = =

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  • Server-based Messengersystems (“condition”) need appropriate servers for usage - e.g. for contact list, message forwarding, groups or chat room management.
  • Server-supported Messengersystems (“possibility”) basically work without servers - however, servers can be used for special functions (like buffering of messages).
  • Serverless Messenger systems (“abandonment”) are completely decentralized and organized without special (additional) servers.