Architecting Modern Applications using Microservices in ASP.NET Core Web API is a comprehensive, practical guide for developers and architects who want to design, build, and deploy modern microservice-based applications with ASP.NET Core Web API. This book is designed for developers who are new to microservices as well as professionals looking to strengthen their architectural skills. Written in clear, structured language, it simplifies complex microservice concepts and demonstrates how they are applied in real-world enterprise systems.

Microservices architecture has become the preferred approach for building scalable, resilient, and maintainable applications. This book walks you through the fundamentals of microservices, common design patterns, and multiple architectural approaches. With hands-on guidance and practical examples, readers learn how to design clean, modular services and deploy them effectively in cloud environments.

Why You Should Learn Microservices with ASP.NET Core

Modern applications demand scalability, flexibility, and faster release cycles. Microservices architecture enables teams to build independent services that can be developed, deployed, and scaled separately. ASP.NET Core Web API provides a powerful, lightweight framework for efficiently implementing microservices.

Learning microservices with ASP.NET Core prepares developers for real-world enterprise projects and cloud-native development. These skills are highly valued for roles such as backend developer, software architect, cloud engineer, and DevOps engineer.

What Makes This Book Different?

This book focuses on practical microservices architecture rather than abstract theory. It demonstrates how different architectural patterns can be implemented using ASP.NET Core Web API and explains when to use each approach. The book emphasizes:

• Clear introduction to microservices architecture

• Industry-standard microservices design patterns

• Multiple architectural approaches with real examples

• Practical implementation of the CQRS design pattern

• API gateway implementation using Ocelot and YARP

• Cloud deployment strategies using Microsoft Azure

Readers gain both architectural understanding and hands-on implementation experience.

Who Should Read This Book?

This book is ideal for:

• ASP.NET Core developers

• Backend and Web API developers

• Software architects and solution designers

• Developers transitioning to microservices

• Cloud and DevOps professionals

• Anyone interested in modern application architecture

Chapter Overview

Microservices Architecture Introduction

This chapter introduces microservices architecture and explains how it differs from monolithic systems, highlighting its benefits and challenges.

Microservices Design Patterns Used in the Software Industry

Learn common microservices design patterns used in real-world systems and understand how they solve architectural challenges.

Building Microservices Using 3-Tier Architecture

This chapter explains how to implement microservices using the traditional 3-tier architecture approach with ASP.NET Core Web API.

Building Microservices Using Onion Architecture

Learn how Onion Architecture promotes separation of concerns and maintainability when building microservices.

Building a Microservice Using Clean Architecture

This chapter focuses on Clean Architecture principles and demonstrates how to build loosely coupled, testable microservices.

Building a Microservice Using the CQRS Design Pattern

Understand the CQRS design pattern and how it helps manage complex read and write operations in microservices.

Practical Implementation of CQRS Design Pattern

This chapter provides a hands-on implementation of CQRS in a real microservices scenario.

Building a Microservices API Gateway with Ocelot

Learn how to build an API gateway using Ocelot to manage routing, aggregation, and cross-cutting concerns.

Building a Microservices API Gateway with YARP

This chapter explains how to use YARP as a modern, high-performance API gateway for microservices.

Microservices Deployments on Microsoft Azure App Service

Learn how to deploy microservices to Microsoft Azure App Service and manage cloud-based services.

Deployment of Microservices on Microsoft Azure Cloud using CI/CD Pipeline

The final chapter explains how to automate microservices deployment using CI/CD pipelines on Microsoft Azure.

Architecting Modern Applications using Microservices in ASP.NET Core Web API equips readers with the architectural knowledge and practical skills required to design, build, and deploy scalable microservices-based applications with confidence.