This report summarizes key insights from the digital advertising industry in Q2 2015, including the effects of Google's Mobilegeddon algorithm change, growth in search engine marketing spend globally and by region, and metrics like click-through rates and cost-per-click for different devices, regions, sectors, and search engines. Some of the main findings are that global SEM spend increased 6% year-over-year while CTRs grew 9% and CPCs rose 6%, retailers saw a 17% increase in SEM spending, and marketers are paying 6% higher CPCs for tablet users than desktop users.