Ruby or Elixir. Which one do you need for your software project?

You are a business owner, have an idea for a web app and are looking for the right software house to outsource for your project. You are a non-technical person, but stumbled upon terms like ‘web development’, ‘Ruby’, ‘Ruby on Rails’, ‘Elixir’ and ‘Phoenix’.Yeah, we know it’s enough to make one confused about which technologies to use in building a product and finding a dev team with specific skills.Or suppose you are a programmer who wonders if being a pro at Ruby is a sufficient skill for your current and future software development projects. You follow all these threads on Quora and forums and find yourself a bit unsure about the relevance of your coding skills. You are thinking about learning this new language more people are talking about: Elixir.