Hi @MAHANDI Naziha (external),
Microsoft has an official document that spells out where and under what circumstances SQL Server 2019 Developer edition could be installed and used.
It is any environment except a production:
• Development
• Test
• User Acceptance Testing (UAT)
For the installed SQL Server 2019 Developer Edition, you can find its EULA with all details under:
C:\Program Files\Microsoft SQL Server\150\License Terms\SQLServer2019_License_DEV_1033.rtf
(for other versions the folder is slightly different)
Here is a relevant excerpt from the official Microsoft document:
