Board Thread:Questions and Answers/@comment-26576684-20150705215126/@comment-6697950-20160710093923

Sugou's team was in charge of both the SAO and ALO servers. Once the SAO server security was down when the game was cleared, all he had to do was reroute some players from the SAO server to the ALO server, seeing as the ALO server was just a copy of the SAO server and still had ties to it.

And as Richie said, don't hijack threads. If you want to ask a different question, create a new topic for it.