MatchMaking, what are the options?

hello

what are the options for multiplayer matchmaking nowadays with udk?

cheers

I realize this is really late, but Steamworks has a matchmaking service. If most of your players use Steam, they can use Steamworks matchmaking. I’m not sure if you have to access native code in order to use it. And of course, for anyone not playing through Steam, matchmaking would have to be done some other way.

thanks Nathaniel for the option you have suggest.
It really help me alot :))