Ruby is a universal development tool. It can be used to write almost any program as needed.

The tool is most commonly used by web programmers. It is used to write various applications in the following areas:

• e-commerce;
• SaaS solutions;
• exchange platforms;
• other complex projects.

The only thing Ruby is definitely not suitable for is real-time projects. These require interaction with sockets and the use of sequential user identification. The tool we are studying has some difficulties with such operations.

Startups often use this language because it allows them to quickly and effectively test their ideas. Combined with Rails, it is an ideal tool for prototyping.

Developers choose this tool because it allows them to quickly create new projects, involve new programmers, develop features and functionality, and then test them successfully and conveniently.

Ruby is actively being implemented in projects by large companies such as SoundCloud, Dribble, GitHub, GitLab, and others. There are also organizations that use this language but do not openly talk about it.