Is it possible to use Enterprise Connections in Free tier?
As I can see in the pricing page, it is not included, but I am using a Free tier and I was able to set up AAD Enterprise connection. It works totally fine, and also my trial has finished some time ago.
So is it normal that my AAD connection works well in Free tier, and if yes, are there any limitations that I should be aware of?
You will be able to use Enterprise Connections even if you are in the Free Tier. But that will lead your usage to be over quota, as it is not included in the free features.
If you do need to use Enterprise Connections we recommend you to analyse one of our Paid Plans, that will also allow you to use more features. Pricing - Auth0