IdentityServer4 in ASP.NET Core Part 1

If you’ve worked with APIs at all in .NET Core then you have probably had the need to work with tokens for security. You could roll your own set up just using the underlying functionality in ASP.NET Identity, or you could enable easy mode and use something like IdentityServer4. There are other options out there for you to choose from, but this post will focus on IdentityServer4. Our application is going to consist of an API, a web application for IdentityServer4 and a Javascript based client. The source code for this post can be found here.
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