Gartner defines unified commerce platforms anchored by point of sale (POS) for Tier 1 retailers as composable, experience-led central hubs that leverage real-time data exchange, event-driven MACH (microservices, API-first, cloud-native SaaS, and headless) architecture, and edge computing services to deliver scalable and seamless customer experiences in and across all retail touchpoints. Tier 1 retailers operate many channels, including a significant portfolio of stores, and generate annual retail revenue of at least $3 billion.