I went into their office and they asked me about my resume and current job at the time. Interviewed with two people at the same time. It was very relaxed.
I applied online. The process took 1+ week. I interviewed at Adcetera (Houston, TX) in Mar 2015
Interview
It was pretty laid back, focused a lot on my PM experience and how I would fit in culturally. Hit on my technical skills, but we always came back to personality and how I'd fit culturally.