How to use Sharepoint Online to authourize access to remote site?

Question

We have a website that runs on our local server which has a publicly available domain. This site has a sql server data source and pages to work with the data. This site needs to require a login to access it.

Now, all the users that will use this site also have an account in our 365 online, and I don't want to issue a separate username and password for my local site.

Is there a way to make my own webapp use Sharepoint's authentication so users wouldn't need two logins?

I'm looking at this page from Microsoft to add microsoft.aspnetcore.authentication.microsoftaccount. Am I right to think this will let me use the authentication in my own webform app?

Answer 1

What you'll want to do is create an app registration in Azure Active Directory and sign your users in using that.

There are a bunch of tutorials/samples on the web (like this one) but they're more aligned with .Net Core/MVC. If you're running WebForms you might some additional sleuthing to do.