The Convention over Configuration principle is one of the key features that makes Ruby on Rails such a powerful and popular web application framework. By reducing the amount of code that developers need to write and providing sensible defaults and conventions for various aspects of web development, Ruby on Rails allows developers to focus on building high-quality applications rather than getting bogged down in low-level configuration details.

Ruby on Rails is a framework that embodies the Convention Over Configuration principle. Rails provides a set of conventions and sensible defaults that make it easy to build web applications quickly and efficiently.

Some of the key areas where Rails uses CoC include:

• File and Directory Structure: Rails assumes a specific file and directory structure for applications, making it easy to find and organize different parts of an application. For example, Rails assumes that all controllers are located in the app/controllers directory, and all views are located in the app/views directory.
• Routing: Rails provides a routing system that maps incoming HTTP requests to the appropriate controller and action. By following a set of conventions, Rails can automatically generate RESTful routes for resources, reducing the amount of manual configuration required.
• Database Schema: Rails uses a tool called ActiveRecord to manage database connections and access. By following a set of conventions, ActiveRecord can automatically infer the structure of a database schema based on the naming of models and their associations, reducing the amount of manual configuration required.
• Testing: Rails provides a testing framework that makes it easy to write and run tests for an application. By following a set of conventions, Rails can automatically generate test files and provide helpful error messages when tests fail.

Convention Over Configuration, or CoC for short, offers several benefits to developers using Ruby on Rails:

Reduced Boilerplate Code: One of the main benefits of CoC is that it reduces the amount of boilerplate code that developers need to write. With sensible defaults and conventions in place, many aspects of an application can be configured automatically, freeing up developers to focus on building the unique parts of their application.

Faster Development: By reducing the amount of code that needs to be written, CoC can help developers to build applications more quickly. This can be especially useful for small to medium-sized projects where time-to-market is critical.

Consistency: By following established conventions, Ruby on Rails applications tend to be more consistent in their structure and behavior. This can make it easier for developers to work on different parts of an application and for new developers to get up to speed quickly.

Easier Collaboration: Because CoC establishes conventions and defaults that are widely understood within the Rails community, it can make collaboration between developers easier. By working within a common framework, developers can spend less time discussing implementation details and more time working on the unique aspects of their application.

Lower Learning Curve:Lower Learning Curve: Finally, CoC can help to lower the learning curve for developers who are new to Ruby on Rails. By providing sensible defaults and conventions, Rails makes it easier for developers to understand how an application is structured and how it works, allowing them to get up and running more quickly.