>Web push notification don't need Apple, Google, Microsoft or Ubuntu between the web app and you. They do. To implement "web push", each web browser vendor h

>Web push notification don't need Apple, Google, Microsoft or Ubuntu between the web app and you. They do. To implement "web push", each web browser vendor has their own backend server to handle notification subscriptions[1][2]. - Mozilla Firefox uses their server at "push.services.mozilla.com" - Google Chrome uses their server "fcm.googleapis.com" - Apple Safari uses "api.push.apple.com" - MS Edge uses their Windows Notification API server [1] https://stackoverflow.com/questions/53169001/web-push-do-they-use-public-servers-like-google-etc/53378967#53378967 https://stackoverflow.com/questions/53169001/web-push-do-the... [2] https://stackoverflow.com/questions/48683770/how-are-web-push-messages-delivered/48684217#48684217 https://stackoverflow.com/questions/48683770/how-are-web-pus... [3] https://news.ycombinator.com/item?id=38430226 https://news.ycombinator.com/item?id=38430226 The web push architecture requiring middleman servers in between the website and the browser is similar to native iOS apps requiring the APNS server (Apple Push Notification Server): [4] https://stackoverflow.com/questions/17262511/how-do-ios-push-notifications-work/30617904#30617904 https://stackoverflow.com/questions/17262511/how-do-ios-push...