Difference between cold brew and iced coffee? What is the difference between cold brew and iced coffee?
Is cold brew better than iced coffee?
Iced coffee is simply hot brewed coffee or espresso that has been poured over ice, and possibly mixed with contaminants like milk and sugar ;) 
Cold brew is coffee that has been brewed with cold water over a long period of time, usually 12-24 hours. The process eliminates a lot of the acidity in coffee, and produces a sweet, flavorful coffee when done properly. Some people like cold brew more than hot coffee, it's all just personal preference.