Dallas Tester, Developer Programs Manager at Twitch wrote a great introduction post on the Twitch Blog. Dallas is part of the Developer Success program and will serve as the point of contact as you build out integrations with Twitch.
It could be anything from API access, to embedding video on your website, to create Stream First games. He will also be the voice behind the TwitchDev Twitter account and a helper in the Twitch Developer forums. Head over to the Twitch blog for the full read.
via Twitch Blog