< Back to Courses

Introduction to IdentityServer and OpenID-Connect

Today we face many authentication and authorization challenges when we’re designing and developing modern applications. The requirements are more challenging than ever, especially when we need to support everything from mobile and SPA applications, to microservices in the cloud.

OpenID Connect is the de-facto standard we should use for handling authentication and authorization in modern applications. However, it can still be very confusing with all the various concepts, including scopes, claims, flows, resources and tokens.

In this course, you will learn the following:

  • How OAuth and OpenID Connect work together in detail
  • How to set up an instance of IdentityServer
  • How to secure ASP.NET Core applications using OpenID Connect and IdentityServer

When we go through these things, we will not just configure some obscure magic libraries; instead, we will look under the hood of OpenID Connect and IdentityServer to understand what really makes them tick.

We recommend that you have a good computer that can run multiple instances of Visual Studio and at least one big monitor. In this course, we use ASP.NET Core 7 and IdentityServer 6.

After this course, we recommend you look at the course IdentityServer in Production, where we will teach you how to create a production-ready set-up of IdentityServer.

This course contains a lot of hands-on practical exercises where you will learn how to work with OpenID Connect and the latest version of Duende IdentityServer version 6.

Target audience

ASP.NET Core developers who want to learn the fundamentals of OpenID Connect and how to protect applications using the latest version of IdentityServer. 


Basic knowledge of

  • ASP.NET Core (like our ASP.NET Core fundamentals course)
  • C# (LINQ / Lambda…)
  • The HTTP(S) protocol and how the web works in general
  • HTML


3 days.


In this course, we will cover the following:

  • OAuth 2.1 / OpenID Connect
  • Certificates and HTTPS
  • Token services
  • Duende Identity Server
  • JSON Web Tokens (JWT)
  • Scopes and claims
    • Identity resources
    • API resources
    • APIScopes
  • Securing the tokens
  • Cross-origin resource sharing (CORS)
  • Flows
    • Implicit flow
    • Authorization code flow
    • Client credentials flow
  • Proof Key for Code Exchange (PKCE)
  • External identity providers
  • Application types:
    • Web applications
    • SPA and mobile applications
    • Server-to-server communication
  • ASP.NET Core
    • Authentication
    • Cookie authentication
    • Authorization
    • OpenID Connect
    • Claims transformations

And much more…

Introduction to IdentityServer and OpenID-Connect

Article SKU

3 days


English, Swedish

Contact me for a price enquiry or to submit interest.

Training FAQs

Do you provide both on-site and remote training classes?

Yes, we provide both on-site and remote types of training.

Do you provide training in both Swedish and English?

Yes, both Swedish and English are available. All our course materials are in English and we can teach the class in either Swedish or English.

Do you do half-day training?

For remote training, we have options for both half and full days. When we run trainings on-site, we usually do full-day classes.

Do you do webinars and shorter talks?

Yes, please visit our Talks page for more details.

Do you provide customized courses?

Yes we do that. Contact me for more information.