Microservice-based SaaS application architecture, modern, sleek, futuristic, 3D visualization, blueprint-style illustration, soft glow effects, subtle shading, minimalist background, cityscape at dusk, skyscrapers, neon lights reflecting off glass windows, clean lines, geometric shapes, nodes and connections, data flow diagrams, colorful icons, user interface elements, wireframes, responsive design, mobile devices, laptops, multiple screens, collaboration tools, real-time updates, cloud hosting, scalable infrastructure, secure encryption, facial recognition login, biometric authentication, password manager integration, seamless navigation, intuitive UI.