A developer has built a comprehensive e-commerce reference architecture to tackle microservices complexity using modern .NET. The platform comprises nine independent services like Catalog and Order, employing a Polyglot Persistence strategy with databases like PostgreSQL and MongoDB. Core technologies include .NET 8, YARP as an API Gateway, and RabbitMQ with MassTransit for messaging, aiming for a production-grade, scalable system.

Instead of traditional layered architecture, the project uses Vertical Slice Architecture, organizing code by feature rather than technical layers. Each feature—like creating a product—bundles the API endpoint, validation, and handler logic together. This approach improves maintainability and reduces the cognitive load when debugging specific business functions, a common pain point in large .NET codebases.

For operational efficiency, the architecture integrates an OpenTelemetry observability stack with Grafana, Prometheus, and Loki for logs, metrics, and traces. CI/CD uses GitHub Actions with path filtering to build only changed services, saving time. The author presents this as a practical trade-off, balancing architectural purity with real-world maintainability for teams building complex distributed systems.