Becoming a Steam Content Provider

http://support.steampowered.com/cgi-bin/steampowered.cfg/php/enduser/std_adp.php?p_faqid=123

We've signed up several partners to be Steam content providers, and we're always looking for more.

To get started, we require that you have one or more available servers running Windows 2008 Server Edition, (or later versions) and at least 50 megabits/second of bandwidth.

Please send a note to biz@steampowered.com and we'll get back to you ASAP.