Technical diagram, system architecture, RESTful API, microservices, cloud computing, scalable, secure, modular, layered, abstraction, encapsulation, service-oriented, event-driven, request-response, JSON data format, HTTPS protocol, load balancer, gateway, authentication, authorization, rate limiting, caching, queuing, circuit breaker, monitoring, logging, analytics, containerization, orchestration, Kubernetes, Docker, Swagger documentation, API gateway, backend for frontend, real-time data processing, data streaming, event sourcing, cloud native application, serverless architecture, function as a service.