Overwatch – The Elusive Goal: Play by Sound (GDC 2016)

This is not a direct "resource" for Overwatch. The people in this video will not give you any tips and tricks, nor will they guide you through any maps. Instead, this video explores the way sound is used as a whole in Overwatch. Again, while not an actual guide or resource -- this video is invaluable for understanding the sound design and techniques used in Overwatch.