Ad spending on social media continues to grow at an impressive rate and is taking increasingly more share of marketers’ interactive marketing budgets. Engaging and more interactive format on mobile devices and better targeting capabilities are the main drivers of the increasing spend on social networks. We expect new mobile app-only social networks and fast-growth ad formats such as video to fuel growth in future. The forecast details the social media advertising spending for the seven most prominent economies in Europe (referred to as EU-7) and the rest of Europe. It also includes a breakout of social media ad spending by mobile and desktop.