Internet industry jargon is a special set of words and phrases used to describe different parts of the internet. It's like having your own secret language! Jargon can be used to talk about things like websites, apps, search engines, social media, online marketing and other online technology. For example, a "firewall" is a type of software that helps keep your computer safe from viruses, while an "API" is a set of instructions that tells two different computer programs how to communicate with each other.