Steve Fairchild, Turk Schonert and Alex Van Pelt handled the duties under defensive-minded head coach Dick Jauron.
For the first time since the Bills drafted Edwards in the third round in April 2007, he will play for a head coach with an offensive background. Chan Gailey will call the plays with young coordinator Curtis Modkins acting more like a sidekick.
Edwards is a fan of that autocratic setup rather than the muddled chain of command under Jauron.
"I don't want to talk negatively about last year's staff," Edwards said Tuesday at the start of offseason workouts, "but the hard part for me as a quarterback, you want to have one person to listen to and one voice.
"I feel like the last couple years you would say one thing to one guy, and he would say it to another guy, and what you're looking for would kind of get lost in the process.
"I feel with the situation we're in, if you like something offensively you're telling it to the head coach. You're telling it to the offensive coordinator. They're the same person, and he's probably going to get that done for you."