> The **Beacon** API is used to send an asynchronous and non-blocking request to a web server. The request does not expect a response. Unlike requests made using [[https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest | XMLHttpRequest]] or the [[https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API | Fetch API]], the browser guarantees to initiate beacon requests before the page is unloaded and to run them to completion.