# Environments This directory contains environment-specific Rails configuration. This lets us have different configuration settings in development, test, and production modes. Universal Rails configuration goes in [config/application.rb](../application.rb) or in [config/initializers](../initializers). # See also * [config/application.rb](../application.rb) # External links * https://guides.rubyonrails.org/configuring.html#creating-rails-environments