Earlier this week the creators of Call of Duty: Ghosts announced that the Xbox One version would receive dedicated servers. Sadly, when asking about other platforms receiving the same treatment, Activison wasn't quick to give a concrete answer.
Today, we have a reasons as to why dedicated servers have never been an option on other platforms:
We looked into dedicated servers on console when we were developing Call of Duty 4, and the problem was that we could only fit four [multiplayer] games onto each server. So, you times that by how many games were being played, and it was going to come out to be more servers than every data center in the United States. It would have been impossible to do.
Obviously the power of the servers grew, and we can fit more and more instances per server, which has helped a bit, and the fact now that Microsoft is supporting this huge cloud initiative, dedicated servers make a ton more sense. We’ll have scalability, and we’re not having to run data centers which we’re not necessarily equipped to do. Having Microsoft do that is fantastic.
By this time we all know that the Xbox One has dedicated servers for all multiplayer games, so it was wise for Infinity Ward to utilize this function.
The infrastructure, the internet service producers, have all realized that and are starting to formulate their strategies for how they run their business around multiplayer social gaming. I remember on Call of Duty 4 we have problems in Europe because some of the ISPs here were bandwidth limiting video game traffic.
We fought and fought with those guys, and literally sent people to those companies trying to explain what’s going on, and fortunately today I think it’s a significantly improved environment.
So there you have it, all other previous versions of Call of Duty were forced to use peer-to-peer connections due to memory restraints. As for other versions of Call of Duty: Ghosts, that has yet to be seen. But with games like TitanFall shooting for dedicated servers on the Xbox 360 and Battlefield 4 utilizing dedicated servers across all platforms, how could Activison not? The question has been asked time and time again though, so don't hold your breath.
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