T-Mobile's Digital Commerce Platform leverages AWS services to create a resilient, scalable e-commerce solution. The architecture uses Amazon API Gateway, EC2 instances with Kubernetes, RDS for relational data, and Kinesis to stream cart updates to DynamoDB global tables. This design enables cross-region active/active setups, allowing seamless failover and rehydration of customer carts. The solution also incorporates OpenSearch for non-transactional data like product catalogs, ensuring high availability and performance for T-Mobile's digital commerce operations.