The post explains how to create a flow for sending custom notifications using flow-builder in an organization's setup. The flow sends these notifications to the account owner when the opportunity amount changes. It thoroughly documents the process, including each step of the flow creation and implementation.
The Winter '21 release introduces the custom notification from Apex code feature that alerts users to changes or updates. This is especially useful for foreground notifications of backend asynchronous code execution. The CustomNotification class can be configured in various ways and sent using Apex code. Methods include managing the title, body, sender, type, target record and page of the notification.