First published on Campaign In its fourth year, the 2017 Digital Upfronts is set to be the largest to date with four new partners and 13 sessions scheduled across six days. Newcomers Amazon, ESI Media, Hearst and The Telegraph will join AOL, DigitasLBi, Facebook, Global, JCDecaux, Mail Advertising, Twitter, Yahoo and YouTube to showcase their latest innovations within the digital advertising space. According to IAB UK’s Adspend report , digital advertising is the fastest-growing ad medium in the...