Push Notifications complete flow under 90 seconds | Web Push Notifications Explained
Push notifications on the web feel almost magical.
Your app can be completely closed… the tab is gone…
yet the notification still arrives.
So what actually happens behind the scenes?
In this video, we break down the full architecture of how web push notifications work.
We follow the entire flow step-by-step:
Server → Cloud Messaging Service (FCM) → Operating System → Browser → Service Worker → Notification
You'll learn:
• Why the message never goes directly to your device
• What role Firebase Cloud Messaging (FCM) plays
• How the OS wakes up the browser in the background
• Why the Service Worker is responsible for displaying the notification
• Why your web app doesn't even need to be open
• Why push notifications behave differently on Android vs iOS
This system is part of the **Web Push standard**, which modern browsers implement using different push services.
If you're learning about Service Workers, Web Push APIs, or modern web architecture, this flow is essential to understand.
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