An example is a relatively low traffic, non-critical web app which uses an SSL certificate. There are scenarios however where this feels a bit too much.
(Including B1 App Service, SSL cert & Azure DNS). Price for production grade App Service starts roughly from 60 euros per month. Want to minimize your Azure ASP.NET Core web app cost? How would 9 euros per month sound? Can do, if you don’t need fancy PaaS features, and host the app on a virtual machine.