The phrase "breadth of experience" refers to a wide range or variety of experiences, knowledge, skills and exposure that an individual has gained over time. Full definition
Wide breadth of experience in the life cycle development of drugs. (members.climber.com)
I also have a wide breadth of experience of the type that allows confidence that the level of excellence you expect will be met. (members.climber.com)
Control is completely in your hands — you call all the shots, but still get access to a wide breadth of experience from your self publishing company. (dogearpublishing.net)