Methodology: Data is from the November 2019 Marin Software "Digital Advertising Benchmark Report: Q3 2019" Data is based on billions of dollars in combined annualized digital ad spending on paid search, social, mobile and ecommerce from advertisers worldwide across all key industries. Only advertisers active on its platform for the quarters cited were included, measuring key performance indicators on a year-over-year and quarter-over-quarter basis, and removing any outliers with significant YoY or QoQ changes. According to Marin Software, performance of a specific segment may be materially influenced by performance of one or two larger advertisers. Marin Software is a cross-channel performance advertising platform provider.