Amazon’s ad sales remained resilient in Q1 despite an uncertain economic environment that has led marketers to tap the brakes on spending. Like many in the tech world, the company took care to highlight the benefits of automation in improving advertising relevance and efficiency amid renewed interest in sectors like artificial intelligence. Total revenue hit $127.4 billion, above Wall Street’s estimates, but investors were spooked about a quarter-over-quarter slowdown in its Amazon Web Services cloud-computing unit.