Technical diagram, system design, microservices architecture, multiple servers, containers, cloud infrastructure, network communication, API gateways, service discovery, circuit breakers, load balancers, distributed databases, message queues, event-driven, asynchronous processing, scalability, flexibility, fault tolerance, high availability, modularized components, Kubernetes, Docker, RESTful APIs, JSON data format, secure authentication, authorization, monitoring dashboards, logging mechanisms, DevOps practices.