"Through Zenith we extend exceptional professional learning to local marketers at a fraction of the cost of major marketing events." -Marty Weintraub, Aimclear Founder DULUTH, Minn. (PRWEB) February 13, 2018 Top marketing professionals from across the upper Midwest and nationwide will converge on Duluth for the annual Zenith Digital Marketing Conference, April 26, 2018. [...]