Three key executives responsible for Amazon's Just Walk Out technology have departed, signaling a shift in the company's checkout technology strategy. Jon Jenkins, Sanjay Dash, and Dilip Kumar have left their roles, with Kumar moving to oversee Amazon's AI chatbot initiative. Colleen Aubrey has been appointed as the new head of Just Walk Out under her expanded role in AWS solutions. Despite the leadership changes, Amazon maintains confidence in its checkout innovations, aiming to expand Just Walk Out to third-party stores next year after scaling back its physical store presence.