Apple silicon

System

Official docs outline

Essentials
Covers Porting your macOS apps to Apple silicon, Building a universal macOS binary.
General porting tips
Covers Addressing architectural differences in your macOS code, Porting your audio code to Apple silicon, Porting just-in-time compilers to Apple silicon.
Graphics
Covers Porting your Metal code to Apple silicon.
Performance
Covers Tuning your code’s performance for Apple silicon, Apple Silicon CPU Optimization Guide.
Rosetta
Covers About the Rosetta translation environment.
iOS apps on Mac
Covers Running your iOS apps in macOS, Adapting iOS code to run in the macOS environment, Providing touch gesture equivalents using Touch Alternatives, Providing an edge-to-edge, full-screen experience in your iPad app running on a Mac.
Kernel and drivers
Covers Implementing drivers, system extensions, and kexts, Installing a custom kernel extension, Debugging a custom kernel extension.
Security
Covers Improving control flow integrity with pointer authentication.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.