GroupM, the leading digital media investment firm, has released the preview version of its annual report on the state of digital marketing and its impact on marketers and advertisers. The report, titled "Interaction: Preview Edition for Clients and Partners February 2017", is published by GroupM's Worldwide Media and Marketing Forecast, highlighting the challenges in digital marketing across channels. On a positive note, the report predicts the digital share of ad investment in 2017 will jump to around 33%. Interaction 2017 takes a very cautious approach in defining the digital landscape, suggesting the new and old worlds are contributing equally to new marketing technologies in dollar investments since 2013. In 2016, CMOs spent 72 cents of every new dollar on digital advertising, and 21 cents on TV. In 2017, the balance will swing higher -- 77:17, in favor of Digital ad.