Large retail systems today, much like Walmart, operate multiple types of checkout registers across various services — pharmacy, auto care, fuel stations, photo centers, and more. These checkout points are not just limited to traditional frontend registers for scanning and payment, but encompass a broad array of service-specific interfaces.

As the breadth of services grows, retailers are often left managing fragmented checkout solutions. This fragmentation leads to inconsistent user experiences, higher training overhead for staff, and slower development cycles. The need for a unified checkout experience across microapps — one that abstracts underlying service complexity and presents a consistent interface to customers and associates — has never been more critical.