Overridden by User Secrets in Development and Environment Variables in Production. "},.....}} It should not matter what I have as a value for ConnectionStrings:TestDb in that appsettings.json file if I have an environment variable for the connection string. Listed below is the environment variable I am using; $ eb config --cfg v1. In this example, v1 is the name of a previously created and saved configuration file. Settings applied to an environment with this command override settings that were applied during environment creation, and settings defined in configuration files in your application source bundle.