APNs

ELI5 — The Vibe Check

APNs is Apple's postal service for push notifications. Your server sends a notification to Apple, Apple delivers it to the iPhone. You need certificates, keys, and Apple's blessing to use it. Because of course Apple makes you jump through hoops.

Real Talk

Apple's cloud service for delivering push notifications to iOS, macOS, watchOS, and tvOS devices. APNs uses HTTP/2 connections, requires authentication via tokens (JWT) or certificates, and supports alert, badge, sound, and silent notification types with priority levels.

When You'll Hear This

"APNs requires either a p8 key or a p12 certificate — the p8 key is easier to manage." / "Make sure you're using the production APNs endpoint, not sandbox, for your release builds."