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01 · Free course
Free forever 44+ lessons live

Free ASP.NET Core Web API course.

127+ lessons, 60+ hours. From your first endpoint to production-ready APIs with Clean Architecture, Docker, and CI/CD. Delivered straight to your inbox.

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  • 4.9 / 847 reviews
  • ·
  • 12,500+ students
  • ·
  • Mukesh Murugan by Mukesh Murugan
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02 · About

The .NET Web API Zero to Hero course by Mukesh Murugan is a free, 127+ lesson ASP.NET Core Web API course built on .NET 10. It covers REST API fundamentals, Entity Framework Core 10, JWT authentication with refresh tokens, Clean Architecture, Domain-Driven Design (DDD), CQRS with MediatR, Redis caching, Docker containerization, CI/CD with GitHub Actions, OpenTelemetry observability, and integration testing with TestContainers. With 12,500+ students and a 4.9/5 rating from 847 reviews, it is the most comprehensive free Web API course available in 2026. Complete source code is available on GitHub.

  • 127+ lessons
  • Free forever
  • .NET 10 / EF Core 10
  • 4.9 from 847
  • 12,500+ students
03 · Why this course

Not just another CRUD tutorial.

Most free courses stop at basic CRUD. This one goes all the way to production.

Clean Architecture & DDD

Real project with proper layering, domain entities, value objects, and the repository pattern.

JWT Auth & Authorization

Refresh tokens, role-based access, policy-based authorization. The full security stack.

Docker & CI/CD

Containerize your API, set up GitHub Actions pipelines, and deploy. Most free courses skip this.

Observability

OpenTelemetry, Prometheus, Grafana, ELK. Know what your API does in production.

Integration Testing

TestContainers, WebApplicationFactory, real database tests. Ship with confidence.

Caching & Performance

In-memory, distributed Redis, and hybrid caching strategies. Fast, not just functional.

04 · Learning path

From first endpoint to production.

Four stages. 12 modules. Most students finish in 4-8 weeks.

1

Stage 1

Beginner

REST fundamentals, middleware, DI, your first API

Module 1, Module 2

2

Stage 2

Intermediate

Advanced patterns, caching, HTTP clients, background jobs

Module 3, Module 4, Module 5, Module 6

3

Stage 3

Advanced

Security, Clean Architecture, DDD, file handling

Module 7, Module 8, Module 9

4

Stage 4

Production-Ready

Observability, testing, Docker, CI/CD, deployment

Module 10, Module 11, Module 12

05 · Learn + build

Skills you'll gain, projects you'll ship.

Skills you'll gain

  • Build RESTful APIs from scratch with ASP.NET Core & .NET 10
  • Clean Architecture & DDD (Domain-Driven Design) patterns
  • JWT (JSON Web Token) Authentication & Role-based Authorization
  • Entity Framework Core (EF Core) with advanced query patterns
  • Docker containerization & CI/CD (Continuous Integration/Deployment) with GitHub Actions
  • In-memory, distributed & hybrid caching strategies with Redis
  • CQRS (Command Query Responsibility Segregation) & MediatR for scalable, decoupled APIs
  • Structured logging, error handling & ProblemDetails
  • Pagination, sorting, searching & bulk operations
  • Production-ready validation with FluentValidation

Projects you'll build

RESTful Product API

Build a complete CRUD API with proper HTTP status codes, validation, and error handling

Secure Authentication System

Implement JWT (JSON Web Token) authentication with refresh tokens and role-based authorization

E-Commerce Backend

Create a scalable backend with Entity Framework Core, caching, and clean architecture

Dockerized Microservice

Containerize and deploy your API with Docker and CI/CD (Continuous Integration/Deployment) pipelines

06 · Curriculum

127+ lessons across 12 modules.

Each lesson is a detailed written article with complete source code. Read at your own pace.

01

Getting Started with .NET Web API

Master the fundamentals of building web APIs with ASP.NET Core. This chapter covers REST principles, middleware, dependency injection, error handling, logging, and API documentation -essential skills for creating robust, maintainable API foundations.

16 lessons · ~299 min All available
02

Database Management with Entity Framework Core

Learn to implement efficient data access with Entity Framework Core. From basic CRUD operations to advanced concepts like entity relationships, concurrency control, and optimized query strategies that will help you build scalable, data-driven applications.

18 lessons · ~347 min 13/18 available
03

Advanced API Features & Design Patterns

Enhance your APIs with advanced features and architectural patterns. Learn to implement configuration management, validation, CQRS (Command Query Responsibility Segregation), feature flags, versioning, and real-time communication with SignalR to build flexible, maintainable, and feature-rich APIs.

15 lessons · ~314 min 5/15 available
04

Performance Optimization & Caching

Optimize your API's performance through benchmarking, response compression, and multi-layered caching strategies. These techniques will help you reduce response times, minimize database load, and scale your application effectively.

11 lessons · ~211 min 4/11 available
05

HTTP Clients & Resilient API Communication

Build reliable service-to-service communication with properly configured HTTP clients. Learn best practices for creating resilient, maintainable API integrations that can gracefully handle failures when consuming external services.

8 lessons · ~148 min Coming soon
06

Background Processing

Implement reliable background job processing for long-running tasks, scheduled jobs, and queue processing. Learn to use hosted services, Hangfire, and Quartz.NET to handle async workloads efficiently.

7 lessons · ~132 min Coming soon
07

File Handling & Storage

Master file operations in .NET APIs including uploads, downloads, validation, and cloud storage integration. Learn to handle files securely and efficiently with AWS S3 and Azure Blob Storage.

8 lessons · ~148 min Coming soon
08

API Security, Authentication & Authorization

Secure your APIs with industry-standard authentication and authorization techniques. Implement JWT (JSON Web Token) authentication, refresh tokens, role-based access control, OAuth 2.0, CORS (Cross-Origin Resource Sharing), and protection against common security threats to safeguard your application's data and resources.

14 lessons · ~293 min 3/14 available
09

Architecting .NET APIs – Clean Code & Best Practices

Apply proven architectural patterns to design maintainable, scalable APIs. Compare different architectural approaches and implement Domain-Driven Design, Clean Architecture, and Vertical Slice Architecture to manage complexity in your applications.

12 lessons · ~298 min Coming soon
10

Tracing, Monitoring & Observability

Implement comprehensive monitoring and observability for your APIs. Learn to use health checks, distributed tracing, and metrics collection to gain insights into your application's behavior and quickly identify and resolve issues in production.

8 lessons · ~164 min Coming soon
11

Testing & Quality Assurance

Ensure API reliability with effective testing strategies. Implement unit tests, integration tests, and automated test pipelines to catch issues early and maintain high quality standards throughout your development process.

5 lessons · ~101 min Coming soon
+1

More modules await.

View the full curriculum with 127+ lessons across 12 modules.

View all on lessons page
07 · Student reviews

What 12,500+ students are saying.

"This is the best free .NET course I've found. The way Mukesh explains Clean Architecture and EF Core patterns saved me weeks of learning."

Rahul Sharma

Backend Developer at Infosys

"I transitioned from Node.js to .NET using this course. The step-by-step approach made it so much easier than I expected."

Sarah Mitchell

Full Stack Developer

"Landed my first .NET developer role after completing this course. The CQRS and MediatR sections were exactly what my interviewer asked about."

Carlos Rodriguez

Junior Developer at Accenture

"Better than most paid courses on Udemy. The code samples are production-quality and the explanations are crystal clear."

Priya Patel

Software Engineer at TCS

"I've been doing .NET for 5 years and still learned new patterns from this course. The EF Core optimization tips alone were worth it."

David Chen

Senior Developer

"The Docker and deployment sections bridged the gap between tutorials and real-world production apps. Exactly what I needed."

Aisha Okafor

Backend Engineer at Deloitte

08 · Your instructor

Built by someone who ships production .NET.

Mukesh Murugan

Mukesh Murugan

Microsoft MVP · Solutions Architect · @iammukeshm

40K+ LinkedIn8.4K+ Newsletter200+ Articles12,500+ Students

Microsoft MVP & Solutions Architect with 10+ years of experience building enterprise .NET systems. Creator of codewithmukesh.com - impacting 10M+ developers. 40,000+ LinkedIn followers, 12,500+ students trained.

This course is free because my newsletter sustains the work. Learn from someone who's actually building production systems, not just teaching them.

09 · Questions, answered
Is this .NET Web API course really free?

Yes, 100% free forever. All lessons, source code, and resources are available at no cost. No hidden fees, no premium tiers.

Do I need prior .NET experience to take this course?

Basic C# knowledge is helpful, but not required. The course starts from fundamentals and progressively builds to advanced topics. Complete beginners can follow along.

What version of .NET does this course cover?

The course is built with .NET 10 and covers the latest features and best practices. Code samples are updated to use modern C# syntax and patterns.

How long will it take to complete the course?

The course contains 60+ hours of content across 125+ lessons. Most students complete it in 4-8 weeks studying 2-3 hours daily, but you can go at your own pace.

Will I get a certificate after completing the course?

Currently, we don't offer certificates. However, the practical skills and portfolio projects you'll build are far more valuable to employers than certificates.

Is there source code available for the lessons?

Yes! Complete source code for all lessons is available on GitHub. You can clone the repository and follow along with each lesson.

What is ASP.NET Core Web API and why should I learn it?

ASP.NET Core Web API is Microsoft's framework for building RESTful HTTP services in C# and .NET. It powers backends at companies like Stack Overflow, Microsoft, and thousands of enterprises. Learning it opens doors to backend developer, full-stack developer, and cloud engineer roles with salaries ranging from $95K to $150K+.

Is .NET 10 good for building REST APIs?

.NET 10 is one of the fastest backend frameworks available - consistently outperforming Node.js and Spring Boot in TechEmpower benchmarks (https://www.techempower.com/benchmarks). It offers native AOT (Ahead-of-Time) compilation, minimal APIs, built-in OpenAPI support, and seamless Docker/cloud deployment. This course covers all of these modern .NET 10 features.

How does this free course compare to paid Udemy courses?

This course offers 125+ lessons and 60+ hours of content - more than most paid courses on Udemy. It covers advanced topics like Clean Architecture, Docker deployment, observability, and testing that many paid courses skip. The biggest difference? It's 100% free with full source code on GitHub, and it's kept up to date with the latest .NET version.

Can I use this course to prepare for .NET developer interviews?

Absolutely. The course covers the exact topics asked in .NET backend interviews - REST API design, Entity Framework Core (EF Core), JWT (JSON Web Token) authentication, caching with Redis, CQRS (Command Query Responsibility Segregation), SOLID design patterns, Clean Architecture, and Docker containerization. Many students have used this course to land their first .NET developer job or transition from other tech stacks.

ASP.NET Core vs Node.js - which is better for building REST APIs?

ASP.NET Core consistently outperforms Node.js in raw throughput and latency benchmarks (TechEmpower, 2025). It offers built-in dependency injection, strong typing with C#, native async/await that doesn't block the event loop, and enterprise-grade security features out of the box. Node.js has a larger npm ecosystem and is great for lightweight services, but for production APIs that need performance, type safety, and long-term maintainability - ASP.NET Core with .NET 10 is the stronger choice. This course teaches you to leverage all of these advantages.

Is .NET a good choice for backend development in 2026?

.NET is one of the top 3 backend frameworks globally, powering services at Microsoft, Stack Overflow, UPS, GE, and thousands of enterprises. With .NET 10, you get native AOT (Ahead-of-Time) compilation for faster startup, built-in OpenAPI support, minimal APIs for lightweight endpoints, and first-class cloud-native tooling for Docker, Kubernetes, and serverless. The job market reflects this - .NET backend developers earn $95K–$150K+ annually, and demand continues to grow as companies modernize legacy systems to ASP.NET Core.

How long does it take to learn .NET Web API development from scratch?

With structured learning, you can build your first production-ready REST API in 4-6 weeks. This course is designed for exactly that pace - start with REST fundamentals and your first endpoint in Week 1, move to database operations with Entity Framework Core in Week 2, add authentication and advanced patterns in Weeks 3-4, and finish with Docker deployment, testing, and observability in Weeks 5-6. Most students who follow the curriculum consistently report being job-ready within 2 months.

What career opportunities does learning ASP.NET Core Web API open up?

ASP.NET Core Web API skills qualify you for backend developer, full-stack developer, cloud engineer, and solutions architect roles. The average salary for a .NET backend developer in the US is $120K (Glassdoor, 2025), with senior roles reaching $150K-$180K+. Companies actively hiring .NET developers include Microsoft, Accenture, Deloitte, JPMorgan, and thousands of startups. This course covers the exact stack most employers look for: REST APIs, Entity Framework Core, authentication, Clean Architecture, Docker, and CI/CD.

What topics does this free .NET Web API course cover?

This course covers 12 modules: (1) REST API fundamentals, middleware, dependency injection, and logging with Serilog; (2) Entity Framework Core 10 - CRUD, relationships, migrations, soft deletes, bulk operations, and compiled queries; (3) Advanced patterns - CQRS with MediatR, FluentValidation, Options Pattern, Result Pattern, API versioning, and SignalR; (4) Performance - benchmarking, profiling, response compression, in-memory caching, Redis distributed caching, and output caching; (5) HTTP clients with Polly resilience and Refit; (6) Background jobs with Hangfire and Quartz.NET; (7) Security - JWT authentication, refresh tokens, role-based and policy-based authorization, CORS, and OAuth 2.0; (8) Clean Architecture with DDD, CQRS, and Vertical Slice Architecture; (9) File handling - uploads, downloads, S3 integration, and image processing; (10) Observability - OpenTelemetry, Prometheus, Grafana, health checks, and ELK stack; (11) Testing - unit testing, integration testing with TestContainers, and API testing; (12) Deployment - Docker containerization, CI/CD with GitHub Actions, and YARP API Gateway.

Who created this .NET Web API course?

This course was created by Mukesh Murugan (@iammukeshm), a Microsoft MVP and Solutions Architect with 10+ years of experience building enterprise .NET systems. Mukesh runs codewithmukesh.com - a .NET developer blog and newsletter reaching 10M+ developers, with 40,000+ LinkedIn followers and 8,429 newsletter subscribers. He is also the creator of the fullstackhero open-source Clean Architecture template used by thousands of developers worldwide.

What is the best way to learn ASP.NET Core Web API in 2026?

The most effective way to learn ASP.NET Core Web API in 2026 is through a structured, project-based course that covers the full stack - not just CRUD. Start with REST fundamentals and HTTP concepts, then progress to Entity Framework Core for database access, add authentication and authorization, learn architectural patterns like Clean Architecture and CQRS, and finally cover Docker deployment and CI/CD. This free course follows exactly that progression across 125+ lessons, with complete source code on GitHub so you can build real projects alongside each lesson.

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