Making your own DSL (Domain Specific Language) is a great way how to improve solution of the problems in your business environment. As you already have a comprehensive knowledge in your business domain, creating a specialised language, by defining the syntax, grammar and other language rules will significantly help you to make your solution more formal, more efficient, reliable and reusable. Swift is really modern, yet mature language which can be used to be a host to your DSL, making the whole process much faster and less annoying. Swift will solve for you many complex requirements, like syntax analysis, compiling, integrated environment, debugging and many other parts of the toolchain - necessary, or convenient, When following the presentation, you will be able to see how to identify the domain, define/design the grammar, semantics as well as live coding of new language on top of the Swift and XCode, plus new simple language in action.