In the last two decades, the world of business and innovation has changed dramatically. The era of startups and new technology companies has come. Many of them, such as Twitter, Github, AirBnb, Hulu, Shopify, Twitch, have one common feature - they are built on Ruby on Rails technology. This software framework makes it possible to build applications faster, more flexible and easier than ever before. What is the secret of Rails? Let's look at the basic Ruby language syntax, environment and development algorithm, and also demonstrate a real project based on the framework.