Is it possible to send information between servers?

1) HttpService

Requirements: 

• A server to handle your http requests, like in this example from devforum (quickstart)

• HttpEnabled set to true on all the target servers

2) DataStoreService

Requirements: 

• The target servers must be on the same game (universe)

3) TeleportService

Requirements: 

• The target servers must must be owned by the same entity (player, group)

Note: This doesn't means necessarily the same game.