Amazon CEO Andy Jassy says advancements in AI will “reduce” the company’s corporate headcount over the next few years. In a memo to employees on Tuesday, Jassy writes that Amazon expects the change due to “efficiency gains from using AI extensively across the company,” without specifying how many employees would be affected.

Referring to the impact of artificial intelligence, Andy Jassy tells employees, “We expect that this will reduce our total corporate workforce.”

Amazon is currently using AI to optimize inventory in its fulfillment network, upgrade its customer service chatbot and improve product detail pages.