**Network Architecture** Server room, rows of rack servers, blinking lights, complex cable management, air conditioning units, data center, cloud computing, virtualization, network switches, routers, firewalls, intrusion detection systems, load balancers, DNS servers, HTTP requests, packet switching, TCP/IP protocol, subnet masks, IP addresses, network topology, star topology, bus topology, ring topology, mesh topology, 3D visualization of network traffic, glowing lines representing data transmission. **Application Architecture** Enterprise software, complex system design, microservices architecture, service-oriented architecture, event-driven architecture, layered architecture, presentation layer, application layer, business logic layer, data access layer, relational databases, NoSQL databases, cloud-based storage, API gateways, message queues, authentication modules, authorization modules, scalable systems, distributed systems, software integration patterns, enterprise service bus, 3D visualization of system components, glowing lines representing data flow.