Functional Programming is a paradigm as old as time (well as old as the 1950s if we’re being literal) but that doesn’t make it any easier to understand. While there are languages that are functional by design, it’s also possible to use functional programming as a coding guide for any language you're working in. In this presentation, we'll explore the What, Why and How of Functional Programming and also take a look at how to use functional programming with popular languages to write code that is scalable, readable and easy to maintain - all the things good code should be.