The method to build a HTTP site that solely redirects on Azure is as follows:
- Create a new web app in Azure.
- Go to the app's settings and click on "Custom domains".
- Add the domain you want to redirect to in the "Hostname" field.
- Click on "Add binding" and select "HTTP" as the protocol.
- In the "Redirect to" field, enter the URL you want to redirect to.
- Save the settings and wait for the changes to be applied.
Your HTTP site will now solely redirect to the specified URL.