One environment for multiple databases connection

Hello,

I need help to set up multiple databases for each environment. Greatly appreciated if you can provide some insight for me.

Details:

I have an API endpoint that contain multiple methods.  Not all of them are using the same database to get the data as the response.  I know how to set up multiple environment and link each environment to each database.  I like to know if anyone out there has the same scenario like me to have multiple databases for the same environment.

Thank you for your help.