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Build a Multi-Layer .NET Core 3.1 Web API from Scratch (SQL Server -EF Core-, MongoDB, Authentication with JWT)
Updated on Sep, 2026
Programming, Mobile Development,
Duration - 4.5 hours
Training 5 or more people ?
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N-tier architecture is a software design pattern that divides an application into multiple layers.
This course explains how to separate your application into multiple layers with ASP.NET Core 3.1 Web API. Here we are building an API with basic CRUD (Create, Read, Update, Delete) operations. It will be an API for an app that stores which music you like with its artists.
In .NET Core 3.1 Web API, N-tier architecture can be implemented by creating separate projects for each layer. Each layer is responsible for a specific task, and the layers are loosely coupled, meaning that they do not depend on each other.
For example, you could create a project for the presentation layer, a project for the business logic layer, and a project for the data access layer. The following are some of the benefits of using N-tier architecture in .NET Core 3.1 Web API:
It improves the scalability of the application.
It makes the application easier to maintain and test.
It makes the application more secure.
It makes the application easier to develop and deploy.
Create an application in separate projects to make it decoupled from each module.
Implement Repository and Unit of Work pattern.
Use Entity Framework Core for persistence with SQL server.
Use MongoDB Database for NoSQL
Add AutoMapper for mapping models into API resources.
Add Swagger to have a friendly API interface.
Integrate the Authentication & Authorization with JWT (JSON Web Token)
Application Client with ASP.NET CORE MVC to consume the APIs
Data Access with Entity Framework for SQL Server
Data Access with MongoDB
Services — Business Logic
API - Presenting our application
Application Client with ASP .NET CORE MVC to consume the APIs
C#, OOP, Javascript, HTML, CSS
Check out the detailed breakdown of what’s inside the course
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About the course instructor:
Passionate Software Engineer
.NET Engineering and Development Engineer 12 years of experience in environmental application design and development Microsoft .NET Technologies .Net, Angular, .NET Core: ASP.Net WebForms, ASP.Net MVC, WinForms, WCF, WPF , ADO.Net, LINQ, Telerik. Modeling language: UML Web: Javascript, JQuery.
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