diff --git a/Python FastAPI.md b/Python FastAPI.md
index 1283a9e..64888a2 100644
--- a/Python FastAPI.md	
+++ b/Python FastAPI.md	
@@ -40,3 +40,10 @@ def read_root():
 ```
 
 
+## Using Environnement Variables
+
+For API authentication and database connection, basically anything that requires a "secret". We're gonna use environnement variables.
+
+For development, we can write everything in a .env file that will be added to the .gitignore. In production, the content of the .env file will be placed in a "secret" file, usually in /etc/app_name/secret, that will be loaded as an Environnement file by the systemd service file. 
+
+## Using ORMAR as an ORM
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