One of iOS 12’s greatest new features is Siri Shortcuts: the ability for apps to tie into Siri by letting you make custom Siri phrases to perform in-app actions. Siri may still have a long way to go on answering general questions, but this sort of customizable deep tie-in with apps makes it a lot more useful.
Going hand-in-hand with that feature is a new app from Apple called Shortcuts. If you’re familiar with Automator on the Mac, this is essentially the iOS equivalent of that. You use the app to create step-by-step series of automated actions, tying together multiple phone features and various inputs into a single script you can summon with a custom Siri phrase.