Online display is one of the fastest-growing digital advertising channels, driven by online video. It has been especially strong in Asia Pacific, courtesy of China; there, Alibaba is driving digital ad revenue by using new technology to customize campaigns effectively. Thanks to a growing number of online users and increasing ad prices, Forrester expects continued growth over the next five years. This forecast compares Asia Pacific, the US, Europe, and the rest of the world. It outlines regional differences in online display advertising spend as well as how this will change going forward.