Siri Overview - Apple Developer

Siri is the world’s most popular intelligent assistant. With SiriKit, your apps can help people get things done through voice, intelligent suggestions, and personalized workflows.

Design high quality Siri media interactions - WWDC20 - Videos

I'm Not Sure I Understand'—How Apple's Siri Lost Her Mojo - WSJ

Improving Siri Media Interactions and App Selection

SiriKit Apple Developer Documentation

Introduction - Siri - Technologies - Human Interface Guidelines

Siri - Latest News - Apple Developer

Introduction - Siri - Technologies - Human Interface Guidelines

Apple Opens Siri to Third-Party Developers With iOS 10 - MacRumors

Xcode Apple Developer Documentation