Software architecture diagram, futuristic, 3D, colorful, cube-shaped components, connected by glowing lines, abstract background with subtle gradient, minimalist, modern, sleek, metallic textures, reflective surfaces, gentle lighting, high-tech atmosphere, birds-eye view, isometric perspective, detailed nodes, annotated arrows, complex network structure, cloud computing, database, application server, load balancer, firewall, VPN, router, switches, hubs, client devices, laptops, smartphones, tablets, desktops, circular layout, symmetrical composition, vibrant colors, bright accents, professional tone.