Amazon is replacing 'Just Walk Out' technology with smart carts in 27 out of 40 Amazon Fresh stores in the U.S.

Customer feedback highlighted issues with delayed receipts and a preference for immediate spending updates.

Smart carts will enable customers to scan items and view running totals as they shop.

'Just Walk Out' technology will remain in use at Amazon Go stores and with third-party retailers.

Amazon Web Services is now responsible for the sales efforts of 'Just Walk Out' technology.

The Amazon Dash Cart incorporates computer vision and sensor fusion technology to facilitate a checkout-free shopping experience.

Amazon's strategy adjustment showcases its commitment to customer satisfaction and ambition to expand in the grocery industry.