List of services I should use in Azure when deploying app for testing idea ?

Probably the easiest and fastest service to get your site up and running is using a WebApp. They are hosted on a so-called App Service Plan (which is actually the VM running your WebApp).

There's a free tier which allows you to run your website on an https (secure) endpoint by using the yoursite.azurewebsites.net domain.

If you need or want to use a database, there are several kinds of DBaaS'es you can choose from like Postgres, MySQL, etc...

HTH!
Stephan