 NEW YORK--BUSINESS WIRE--Vistar Media, the leading global provider of programmatic technology for digital out-of-home, today announced a Series B funding round of 30M from Lamar Advertising Company Nasdaq: LAMR. The investment reflects Lamar and Vistars belief that technology will be the driving factor behind an accelerated growth rate for the out-of-home OOH industry at large. With the adoption of programmatic now widespread, Vistar is focused on helping digital signage networks transi 