Tech Stack Backend –. NET 8 (Core) Framework:. NET Core Web API Data Access: Entity Framework Core with Npgsql provider (Postgre SQL) Validation & Mapping: Fluent Validation, Auto Mapper Architecture: Onion Architecture with Mediator pattern and dependency inversion Auth: AWS Cognito (Authentication) and Auth Z (Authorization) Caching: In-memory caching Observability: Loki for logging and monitoring Config & Secrets: appsettings.*.json with Options pattern; User Secrets per environment Docs & Discovery: Confluence and Swagger Database Postgre SQL – schema and migrations via EF Core Frontend – React (Type Script) Language/Build: Type Script, RSBuild UI Kit & Theming: MUI v5 with GTP theme (dark mode support) Data Fetching / State: Fetch / Axios, React State Tables & Lists: MUI Data Grid (server-side pagination, sort, filter) Code Quality: ESLint, Prettier Dev Ops & Infrastructure CI/CD: Azure Dev Ops and Game Tech Git pipelines Monitoring: AWS logging with Grafana dashboards via Loki AP...