How to Launching Multiple Projects in JetBrains Rider

Check out How to Launching Multiple Projects in JetBrains Rider by JR. Here is an excerpt:

Create a project for every IIS project you have in your project.
Configure one of them with a start page.
Add them all to a ‘Compound’ project.

Hit run and watch them go

Your multiple projects in a ‘Compound’ project

One of the project configured with a start page

Links that help

The full article is available here.