Slack marketing chief: Why we’re investing a hyper-local Australian brand campaign by Nadia Cameron | Nov 13, 2018 | brand strategy, digital advertising, marketing campaigns, out-of-home advertising, slack | 0 comments Slack’s inaugural Australian out-of-home brand campaign is just one step in a wider multi-channel, hyper-local strategy aimed at taking the collaboration platform to the masses, its global VP of marketing has told CMO.