Master Building Production-Ready APIs with .NET 10
The Best .NET Web API Course for beginners—designed to help you master Web API development from scratch and build practical, production-ready APIs with .NET.
About this course
This is the most comprehensive free ASP.NET Core Web API course available in 2026 — covering everything from your first REST endpoint to deploying a production-ready, Docker-containerized API with observability and automated testing.
Unlike most tutorials that stop at CRUD operations, this course takes you through 125+ lessons across 12 modules, including advanced topics that even paid courses on Udemy and Pluralsight skip: Clean Architecture, Domain-Driven Design (DDD), CQRS (Command Query Responsibility Segregation) with MediatR, OpenTelemetry-based observability with Prometheus and Grafana, integration testing with TestContainers, and CI/CD deployment with GitHub Actions.
Built entirely on .NET 10 — one of the fastest backend frameworks available, consistently outperforming Node.js and Spring Boot in TechEmpower benchmarks — this course teaches the exact patterns and practices used by senior .NET developers at companies like Microsoft, Stack Overflow, and Accenture.
Whether you're a beginner learning your first framework, a developer transitioning from Node.js or Java, or an experienced .NET developer looking to fill gaps in architecture, caching, or observability — this course is structured to take you from zero to production-ready. Every lesson includes complete source code on GitHub, and the curriculum is updated regularly to reflect the latest .NET releases and best practices.
Your learning path
Structured progression from fundamentals to mastery
Beginner
REST fundamentals, middleware, DI, your first API
Intermediate
Advanced patterns, caching, HTTP clients, background jobs
Advanced
Security, Clean Architecture, DDD, file handling
Production-Ready
Observability, testing, Docker, CI/CD, deployment
What you'll learn
Why Learn to Build REST APIs with ASP.NET Core?
Building REST APIs with ASP.NET Core and .NET 10 is one of the most in-demand skills in the software industry. Companies like Microsoft, Stack Overflow, and thousands of enterprises rely on ASP.NET Core Web API to power their backend services. Learning to build RESTful APIs with .NET opens doors to high-paying backend developer, full-stack developer, and cloud engineer positions. Whether you're building microservices, REST APIs, or enterprise applications, .NET provides the performance, security, and scalability that modern applications demand. This course teaches you production-ready patterns used by senior developers at top companies.
What you'll build
Hands-on projects to build your portfolio
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
Course content
12 sections · 125 lessons · 60+ hours total length
Getting Started with .NET Web API
- RESTful API Best Practices for .NET Developers
- Understanding HTTP Status Codes – Returning Proper API Responses
- Environment-based Configuration – appsettings.json, Environment Variables & Launch Profiles
- Understanding Middlewares in ASP.NET Core – How ASP.NET Core Processes Incoming Requests
- Dependency Injection (DI) in ASP.NET Core – Deep Dive into DI and Its Benefits
- Service Lifetimes – Differences Between Transient, Scoped, and Singleton Lifetimes
- Keyed Services in .NET – Advanced DI Techniques Using Keyed Services
- Scrutor – Auto-Registering Dependencies for Cleaner DI Management
- Filters in ASP.NET Core – Everything You Need to Know!
- ProblemDetails in ASP.NET Core – Standardizing Error Responses in APIs
- Global Exception Handling – Centralized Error Handling for Better Maintainability
- Structured Logging with Serilog – Implementing Structured Logging in .NET APIs
- Minimal API Endpoints – Understanding and Using Minimal APIs in ASP.NET Core
- API Documentation – Generating OpenAPI Docs and Exploring Swagger Alternatives
- File-Based Apps in .NET 10 – Run C# Without a Project File
Database Management with Entity Framework Core
Advanced API Features & Design Patterns
Performance Optimization & Caching
HTTP Clients & Resilient API Communication
Background Processing
File Handling & Storage
API Security, Authentication & Authorization
Architecting .NET APIs – Clean Code & Best Practices
Tracing, Monitoring & Observability
Testing & Quality Assurance
New lessons added regularly
Requirements
- Basic C# programming knowledge
- Visual Studio 2022 or VS Code installed
- .NET SDK installed on your machine
- Familiarity with HTTP and basic web concepts
Who this course is for
- Beginners starting their .NET development journey
- Developers transitioning from other languages to .NET
- Backend developers wanting to master modern Web API patterns
- Students and self-learners looking for structured .NET content
- Professionals preparing for .NET developer interviews
Your Instructor
Microsoft MVP · Solutions Architect
Microsoft MVP & Solutions Architect with 9+ years of experience building enterprise .NET systems. Creator of codewithmukesh.com — impacting 4M+ developers. 40,000+ LinkedIn followers, 12,500+ students trained.
Frequently Asked Questions
Common questions about the .NET Web API course
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.
This course includes
- 60+ hours of content
- 12 modules
- 125 lessons
- All Levels