Description: Rails configuration refers to the various options and parameters that determine the behavior and characteristics of an application developed with Ruby on Rails. This configuration encompasses fundamental aspects such as database connection, route management, middleware configuration, and customization of development, testing, and production environments. Through configuration files like ‘config/application.rb’ and ‘config/environments/*.rb’, developers can adjust the performance and security of the application, as well as define specific variables that affect the workflow. Rails’ flexibility allows developers to tailor the configuration to the particular needs of their project, facilitating the integration of external gems and libraries. Additionally, Rails configuration is crucial to ensure that the application operates optimally in different environments, ensuring that development features do not interfere with production stability. In summary, Rails configuration is an essential component that allows developers to customize and optimize their applications, ensuring efficient performance and a smooth user experience.