@nhumrich @ballpointcarrot WebSub is server-server via webhooks yes. For server-browser, use EventSource^1 & Notifications^2 APIs. Re: “Most common”, I see more periodic polling from servers (bots, crawlers) than browsers in my own server logs. Your logs may vary. ^1 https://developer.mozilla.org/en-US/docs/Web/API/EventSource ^2 https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API/Using_the_Notifications_API

@nhumrich @ballpointcarrot WebSub is server-server via webhooks yes.
For server-browser, use EventSource¹ & Notifications² APIs.

Re: “Most common”, I see more periodic polling from servers (bots, crawlers) than browsers in my own server logs. Your logs may vary.

¹ https://developer.mozilla.org/en-US/docs/Web/API/EventSource
² https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API/Using_the_Notifications_API