Rails is a web application framework written in Ruby. It takes an opinionated approach to application development, assuming that set conventions best serve developers where there is a common goal. Rails therefore offers conventions for handling routing, stateful data, asset management, and more to provide the baseline functionality that most web applications need.
In this tutorial, you will build a Rails application that will enable users to post information about sharks and their behavior. It will be a good starting point for future application development.