Diagram, client-server architecture, network infrastructure, modern flat design, bright colors, simple shapes, 2D illustration, subtle gradients, clean composition, minimalist background, whiteboard-style lines, digital devices, laptops, desktops, smartphones, servers, routers, switches, firewalls, databases, clouds, internet symbols, Wi-Fi signals, data transmission, packet switching, request-response cycle, TCP/IP protocol, HTTP requests, API connections, security measures, encryption, secure socket layer, firewall configurations, network topology, system integration, software architecture, technology blueprint.