IoT network architecture, futuristic, high-tech, complex system, multiple layers, routers, switches, hubs, servers, databases, cloud computing, wireless communication, radio frequency, microcontrollers, sensors, actuators, gateways, nodes, mesh topology, star topology, bus topology, tree topology, ring topology, hybrid topology, 3D composition, neon lights, circuit boards, wires, cables, screens displaying data, futuristic cityscape, skyscrapers, night scene, moody lighting, cinematic composition.