I propose developing a scalable, secure, and high-performance web application using .NET Core and Azure, ensuring a modern UI/UX, cloud efficiency, and seamless performance. The application will feature multi-tenancy support, role-based authentication (Azure AD, OAuth 2.0, JWT), and RESTful APIs, with Azure App Services, SQL Database, and Cosmos DB for reliability and scalability. CI/CD pipelines with Azure DevOps will enable automated deployments, while caching (Redis), logging (Serilog), and monitoring (Azure Application Insights) will optimize performance. Security will be enforced via data encryption, API protection, and compliance with GDPR/HIPAA. The project will be delivered in structured phases, including requirement gathering, development, testing, deployment, and maintenance, ensuring long-term support and scalability. With 5+ years of expertise in .NET Core and cloud-based architectures, I guarantee a robust, future-proof solution tailored to your business needs. Let’s discuss your requirements further and build a cutting-edge platform together!