Question: I recently started to use Azure with the goal to host this:

1. A Python Web API
2. A Blazor Web App

This is just for testing and I dont care about authentication, database or performance.

The 1-Year trial already expired for me (I tried it once and never used it...).

1. Is it possible to host my scenario in Azure for free?
2. In the "Pay-as-You-go" I have to pay approx. 70€ per month, which is ridiculous (I saw my bill just now...). I forums people say to change the subscription to the "Free Tier". But I dont have that option. Did microsoft remove this?

Answer: 
Depending on the Azure service, you can use free or cheap options for hosting.

Your web apps can run in an `App Service Plan` with the tier Free where you have 60 of minutes free daily. You can use both `Windows` and `Linux` to host your application however please note that `Free Tier` option is only available when you choose `Windows`. It is not available on `Linux`.

See here for reference: <https://azure.microsoft.com/de-de/pricing/details/app-service/windows/> (English version: <https://azure.microsoft.com/en-us/pricing/details/app-service/windows/>).
No, I don't think they have a free tier. IIRC they give you some starting credits to try stuff, and then you have to pay.