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Ultimate ASP.NET Core Web API Development Guide (Udemy.com)

Build and secure RESTful APIs with ASP.NET Core, EF Core, JWT, and Azure using Enterprise Level Design Patterns

4.5
2,357 reviews

Created by: Trevoir Williams

Last updated April 2026

Our take

Based on the ratings of 2,357 students, a sample of their written reviews and the syllabus, as the course stood in April 2026. No course pays to be reviewed.

Trevoir Williams builds a single hotel booking API over 19.5 hours and 239 lectures, split into 26 sections. It starts with setup, REST basics and GitHub, then moves through Entity Framework Core, DTOs, a service layer, security, bookings, paging, caching, rate limiting, logging, health checks, versioning and an Azure publish. The listing says anyone can join, but the description asks for about three months of C# and basic object-oriented ideas. Treat that as the real entry bar.

Reviewers like the short, to-the-point videos and the clear, structured explanations. One says it taught enterprise standards for .NET, and one developer coming from Java Spring or Laravel called it a good way into .NET. The criticism is specific. One experienced developer says theory is thin and slides get read aloud. Another dislikes watching pasted chunks of code instead of typing along. A third says the single running project is hard to rejoin after a break, and mentions sound that sometimes drops. Only 49 of 2,357 ratings are one or two stars.

For a paid 19.5-hour course the value looks solid. It was refreshed in April 2026 and the description targets .NET 9 and 10, so the tooling is recent. There are no quizzes or coding exercises, so the practice is following the hotel project as it grows. It suits learners who like a long, steady build and want security, caching and deployment covered in one place. Anyone still learning C# itself, or wanting deeper theory, should start with the instructor's C# course or another foundation first.

Best forC# developers moving from Java Spring or Laravel who want one full API built start to finish, ending on Azure.
Skip it ifYou want theory, diagrams and quizzes, or you are brand new to C# and need the language taught first.

Pros

  • Short, focused videos that stay on point rather than dragging
  • Covers security, caching, rate limiting, health checks and Azure in one build
  • Updated April 2026 for current .NET, with source code hosted on GitHub
  • Instructor praised for clear, structured explanations and visible enthusiasm

Cons

  • Theory is thin and some slides are read aloud, per an experienced reviewer
  • Pasted code chunks mean pausing to type, and one big project is hard to resume
  • No quizzes or coding exercises, and sound reportedly dips in places
Really great course for cross-training from Java Spring or PHP Laravel frameworks into the .NET ecosystem.
Johan Walden, a student

Listed for everyone, but it assumes about three months of C# and basic OOP. Not a first programming course.

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What you will learn

  • Build A Data Driven API using Entity Framework Core
  • How to Build RESTful APIs with proper practices
  • Configure Cross-Origin Resource Sharing (CORS)
  • Learn C# and Visual Studio Techniques
  • Enterprise Level Design Patterns
  • Using Production Grade Third-Party Tools
  • Troubleshoot and Fix Practical Errors
  • Use AutoMapper and Data Transfer Objects (DTOs)
  • Use NuGet Package Manager
  • Manage and Track Changes using GitHub
  • Asynchronous Programming
  • Custom Logging using SeriLog
  • Use Swagger UI Documentation
  • Deploy API to Microsoft Azure
  • API Versioning
  • API Caching

Course content

26 sections · 239 lectures · 19 hours of video 19 articles

  1. 1Introduction 1 free preview1 lecture · 2 min
  2. 2Getting Started with ASP.NET Core and APIs 3 free previews6 lectures · 17 min
  3. 3Environment Configuration6 lectures · 12 min
  4. 4Project Setup and Configurations7 lectures · 23 min
  5. 5Understanding RESTful APIs and Standards 2 free previews8 lectures · 38 min
  6. 6Working With GitHub (Source Control Management 1 free preview9 lectures · 29 min
  7. 7Responsible Use of AI9 lectures · 34 min
  8. 8Database Modelling with Entity Framework Core 1 free preview13 lectures · 1.2 hours
  9. 9Scaffolding Database Driven API Endpoints (Countries)8 lectures · 39 min
  10. 10Scaffolding Database Driven API Endpoints (Hotels)8 lectures · 32 min

Who it is for

The instructor says it suits

  • Anyone who wants to learn REST API Development
  • Anyone who wants to learn .NET Core Development and Programming
  • Anyone who wants to learn application and hosting and database hosting on Azure
  • Everyone

What you need before you start

  • A computer
  • The Internet

How it compares

Against the other 116 rated Udemy courses in ASP.NET on CourseDuck:

  • Rating4.5 out of 5higher than 61% of them
  • Reviews2,357#30 of 117 by number of reviews
  • Length19.5 hourslonger than 83% of them
  • Last updatedApril 2026more recently than 91% of them

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Course Description

Learn to build scalable, secure, and professional-grade Web APIs with ASP.NET Core and C#.

In this hands-on, step-by-step course, you’ll learn how to design, develop, and deploy modern RESTful APIs using ASP.NET Core, Entity Framework Core, and enterprise-ready best practices. Whether you’re an aspiring backend developer or an experienced engineer looking to sharpen your skills for .NET 9 / 10, this course will give you everything you need to create production-ready APIs confidently.

What You’ll Learn

  • Master the fundamentals of RESTful API design using ASP.NET Core.

  • Implement database access with Entity Framework Core and the Repository Pattern.

  • Secure your APIs using ASP.NET Core Identity, JWT authentication, and refresh tokens.

  • Handle logging and monitoring with Serilog and health checks.

  • Add versioning, caching, and request throttling for scalable APIs.

  • Generate live documentation using Swagger / OpenAPI.

  • Troubleshoot, document, and test APIs with various tools

  • Apply dependency injection and AutoMapper for DTO mapping.

  • Deploy APIs to Microsoft Azure

  • Manage your source control with GitHub.

Why Learn ASP.NET Core Web API?

ASP.NET Core is Microsoft’s modern, cross-platform framework for building high-performance APIs that power enterprise systems, web applications, and mobile backends. Learning how to create and manage APIs enables you to connect applications, services, and clients — from Blazor frontends to mobile apps and third-party integrations.

With C# and .NET Core, you gain one of the most in-demand skill sets in software development today — combining performance, scalability, and maintainability that organizations depend on.

Who This Course Is For

  • Developers who want to build production-ready RESTful APIs with .NET Core.

  • Backend engineers interested in API security, architecture, and best practices.

  • C# programmers looking to apply their skills in real-world web development.

  • Anyone preparing for a .NET developer or Azure-focused backend role.

Requirements

  • At least 3 months of C# experience

  • Basic understanding of object-oriented programming.

  • Visual Studio 2022, Visual Studio 2026, or Visual Studio Code installed.

If you’re new to C#, take my C# Console and Windows Forms Development with LINQ & ADO .NET course first for a strong foundation.

What Makes This Course Unique

This isn’t just theory. You’ll build a complete API step by step, learn from real debugging scenarios, and see how professional developers structure their projects for maintainability and scalability.
Every lecture includes practical examples, and all source code is hosted on GitHub so you can follow along and modify it for your own projects.

By the end, you’ll know how to confidently design, implement, secure, test, and deploy ASP.NET Core Web APIs like a pro.
Read More All Levels All Levels product length iconTime: 19.5h

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Instructor Details

Trevoir Williams

Trevoir Williams is a software and systems engineer, author, instructor, and technical educator specializing in .NET, Azure, SQL Server, microservices, DevOps, secure coding, and AI-powered application development. He holds a master’s degree in Computer Science with a focus on Software Development and has earned multiple Microsoft Azure certifications.

As an author and instructor, Trevoir focuses on practical, production-ready software development. He is the author of Microservices Design Patterns in .NET and Effective .NET Memory Management, and a contributor to the Azure Integration Guide for Business. His work helps developers understand modern architecture, data access, messaging, observability, security, cloud deployment, performance, and AI integration with real implementation context.

Trevoir has taught more than 500,000 learners through online courses on ASP.NET Core, Entity Framework Core, SQL Server, Microsoft Azure, microservices, DevOps, secure application development, and generative AI. He also teaches thousands more through his YouTube tutorials, articles, and practical technical content.

His teaching philosophy is simple: explain the why, build the how, and help learners develop the confidence to apply both in real systems.

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Reviews

4.5

2,357 ratings on Udemy

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By Djardi Messaoud on 2/6/2026

Amazing teacher! You can feel his enthusiasm in teaching and his joy. Most importantly, his experience. I got what I need covered in this course and more! His teaching methodology is very smooth. The way he explains the information is also very structured and makes it easy to grasp it and the concepts around & related to it.

By Aqeel Mohammed on 1/18/2026

The course is completely dependent on one project, this makes it difficult to follow the course itself if you leave the course for a long period of time and then come back, you must now try to memorize and understand the project in order to continue effectively. There's also an issue with the sound sometimes, the sound gets too low all of a sudden and it's very annoying. Also, the refactoring that happens behind the scenes can sometimes be very confusing, especially if you don't remember the project correctly. Overall, thank you for the course, and I hope you'll take my humble opinion as an opportunity to improve the content.

By Mark Edward Joseph Harrison on 9/29/2025

It's a bit rough around the edges at times. Don't care for the role playing exercises at all. But overall, it's been a great course.

By Keyhan Saldjoughi on 4/10/2025

Really Enjoyed. Trevoir is thorough. Naturally Microsoft introduces updates and new versions of Visual Studio, this require some initiative from you, but the answers are out there, and if you want to be a developer, searchig is a hard fact of life we need to accept. The strength of the course is that it conveys the intended learning. Highly recommended. I used Visual Studio 2022 latest community edition, .NET 9, and had no problem.

By Yuliya R on 2/15/2024

This course is excellent. The instructor clearly explains key concepts and suggests advanced courses for deeper learning. The well-structured lessons are just the right length, making the material easy to absorb, review, and refer back to when needed.

By Nagi Reddy Kandi on 11/11/2023

Hi Trevoir, This is very best tutorial. I have two concerns to raise here, 1. Please ignore code first approach and implement Database First Approach. 2.I have follow the your same code, I got exceptions after Section 8. kindly review and provide solution. Thank you.

By Jayson B on 2/2/2023

Amazing content and easy to follow. I appreciate how each line was clearly explained. I not only learned how to develop an API but also best practices, good architecture and deployment. Great course and I found value in how the material was delivered. Thank you Trevoir.

By Say Nas on 10/4/2022

Great course where every little detail is explained (most of the time). Once one or more lines are written Trevoir goes back to read and explain what the codes does in plain language. This along with all the best practices have been really helpful to understand, not only API's, but coding in general a lot better. Definitely one of the better API courses out there.

By Antonio Marcos Fernandes de Souza on 5/12/2022

Great course! Thank you Trevor for improvement my backend knowledge. The explanations were clear and I learnt a lot with you. Your care to make the code clean and utilizable without weird solutions was what I expected. Your way to teach takes us to think instead just accepting code.

By Moropane Edwin Motlokwa on 2/13/2021

This course is very very good. It is very detailed, easy to understand and well paced. The instructor is a very knowledgeable man, he is really helpful and responds to questions on time. I recommend this course,100%. Thanks Trevoir for this course, It is one in a million. Please make another course on how to Consume an web API

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Overall Score : 90 / 100

Ultimate ASP.NET Core Web API Development Guide
Visit course on Udemy Write a review
  • Video Duration: icon 19.5h
  • Price: $89.99
  • Provider: icon Udemy
  • Updated: icon April 2026
  • Level: All Levels All Levels
  • Language: icon English
  • Certificate: icon Yes
  • Lectures:239 in 26 sections
  • Students:14,900
  • Subtitles:5 languages
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