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This book is a complete, end-to-end engineering guide for building a modern digital banking platform using .NET 10, Clean Architecture, Domain-Driven Design (DDD), Angular 21 (Nx Monorepo), Docker, PostgreSQL, and GitHub Actions CI/CD.

Unlike typical programming books, this guide teaches how real financial software is built:

Microservices in .NET 9 with clean boundaries
Domain-driven modeling of banking products
Building a scalable Angular monorepo with Nx
Containerization from day one
Automated testing (unit, integration, E2E)
Secure APIs and IAM
Event-driven workflows
GitHub Actions pipelines (build, test, lint, security scans)
Modern engineering practices used in fintech companies

You will build two full applications:

Branch/Cashier App (Open accounts, deposits, withdrawals, customer KYC)
Customer Internet Banking App (Transfers, airtime/electricity purchases, statements)

The platform includes:

AccountService
CustomerService
TransactionService
NotificationService
IAM / IdentityService
API Gateway using YARP
Observability stack
Automated pipeline integration
And more

This is a practical, real-world guide with extensive code, diagrams, testing, and DevOps workflows. Ideal for full-stack developers who want to master enterprise systems, microservices, and modern software engineering.

Who This Book Is For

This book is for full-stack developers, backend engineers, and architects who want to build modern, production-grade systems using .NET for the backend and Angular for the frontend. It is especially valuable if you want to learn full-stack microservices, API-driven development, and shared monorepo workflows using Nx.

You will benefit from this book if you:

Build full-stack applications using .NET + Angular
Want to adopt a monorepo architecture using Nx
Need real-world, enterprise-grade clean architecture examples
Want to design consistent front-end & back-end boundaries
Prefer practical, hands-on implementation over theory
Work in teams maintaining large codebases with modular design

No previous experience with microservices or Nx is required — everything is explained step-by-step.

What You Will Learn

By the end of this book, you will have built a complete full-stack banking platform using .NET, Angular, Nx, and modern cloud-native architecture. You will learn:

Backend (.NET 10)

Clean Architecture, DDD, CQRS, MediatR
Event-driven microservices with domain events
Minimal APIs and strongly typed endpoints
PostgreSQL integration with EF Core
Docker containers and local orchestration
Integration tests, unit tests, and API tests
YARP API Gateway with per-service Swagger
Authentication & authorization patterns
Observability: logs, metrics, tracing

Frontend (Angular + Nx Monorepo)

Setting up an Nx-powered enterprise Angular monorepo
Designing reusable Angular libraries and feature modules
Building clean service layers for API consumption
Strong typing with OpenAPI-generated Angular clients
State management best practices (NgRx or Signals Stores)
Building an admin dashboard, customer portal, and shared UI
Route guards, interceptors, and front-end security
High-quality UI/UX patterns for enterprise apps

Full-Stack Architecture

Designing front-end/back-end boundaries
Integrating front-end apps with microservices
Consistent domain modeling across layers
Versioning shared contracts (DTOs, API models)
Avoiding tight coupling between UI and backend services
Real-world CI/CD pipelines for monorepos and microservices

Every concept is explained while building a real working system end-to-end.

Keywords: .NET 10, Angular 21, C# 14, Microservices, Docker, Fintech, Clean Architecture, Banking, Nx Monorepo, CI/CD, GitHub Actions, TDD, DDD

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