Walmart Inc. is hiring an executive from Instacart Inc. to accelerate its use of artificial intelligence as the world’s largest retailers looks to bolster its competitive edge.

Walmart has introduced a string of new AI tools, including an AI-enabled bot that allows store workers to practice interviews for new roles virtually and a tool that automatically schedules store-worker shifts.

CEO Doug McMillon said there's a window of opportunity right now for Walmart to apply AI and further incorporate technology.