What is the easiest way to integrate Outlook web add-in into an existing ASP.NET Core 6 application?

Question

We have an existing ASP.NET Core 6 MVC application with a Rest API to another server application and would like to integrate a outlook web add in into the Rest API application.

Is there any existing template or example to do that?

Answer 1

You may consider your Outlook web add-in as a regular web application where you could call any REST API endpoint. See Add-in Command Demo add-in sample code for samples.

Don't forget to address CORS issues, see Addressing same-origin policy limitations in Office Add-ins for more information.