Ad tech and marketing tech are the tools driving operations of the advertising and marketing industries. Related companies are therefore important for investors focused upon internet-based advertising, agency services, measurement services and enterprise software. Underlying trends are therefore particularly important for investors in large public internet-focused companies such as Google, Facebook, Twitter and large technology focused companies such as Adobe and Salesforce.com in addition to the pure-plays such as Criteo, The Trade Desk, Yext, HubSpot, RocketFuel and Rubicon Project among others. Overall, we see high single-digit to low double-digit growth, on average, with a wide range of disparate outcomes for different companies and sub-sectors. From the data, we can see that ad quality, social media management and location-based companies are among the fastest growth sub-sectors. We can also see how larger companies are generally growing faster than smaller ones.