Throughout my continuing journey as a designer I have started to notice several companies are creating what they call design systems. Some people also like to refer to them as design languages, visual languages, or human interface guidelines. Google has Material Design, Apple has created their Human Interface Guidelines, last year Salesforce put together their Lightning Design System, and Airbnb has recently put together a visual design language for their design team. I became curious as what a design system is and why these companies have started to create and document them. Below I’ve broken down my research into a few sections: what is a design system, what are the benefits, and when it is and isn’t beneficial to create one.