Enterprise mobile app architecture on Azure combining React Native frontend with ASP.NET Core backend, OAuth authentication, and SQL Server persistence. Request flow shows React Native Mobile App calling OAuth Token Authentication, then ASP.NET Core Web API routing through Service Layer and Entity Framework Core to Microsoft SQL Server Database. Deployment flow illustrates DevOps pipeline: Developer commits to Git, pushes to Azure Repos, triggers Pull Request Review, runs Azure Pipelines CI/CD, and deploys to Azure App Service Production. This architecture demonstrates secure, scalable mobile-first design with separation of concerns and automated deployment practices. Fork and customize this sequence diagram on Diagrams.so to match your team's authentication strategy, API versioning, or database topology.