Pinterest’s rollout of dynamic creative ads aims to make it easier for marketers to customize their messaging on the platform, whose user base grew 13% to 98 million in the U.S. and 37% to 442 million worldwide in Q3 from a year earlier, according to a quarterly report. Pinterest already gives marketers a way to target specific audiences with ads, and now RevJet, StitcherAds and Smartly.io can help to automate the process. Dynamic creative lets marketers use a library of images and information that are automatically combined into a personalized ad based on real-time audience data, eliminating the need for manual customization.