Search advertising is the oldest form of digital promotion, with roots in Google’s rise during the late 1990s. Search engine optimization (SEO) and search engine marketing (SEM) were disciplines that brought legitimacy to digital marketing departments. The sustained performance of search to this day is a big part of why Google remains such a powerful digital ad platform.

Apple earnings show how much its ad business has grown amid iOS 14.5: App Store search ads have benefited greatly from its privacy update—something advertisers have known for a while and regulators won’t be able to ignore for long.