aria-live attribute announces dynamic content changes on your website. This is useful for elements that pop-up and you want to announce a change (for example, a toast component).
There are three values that you can provide
polite- It will notify a user that something has changed in the UI. It will announce it when the device finishes doing what it is doingassertive- It will notify a user that something happened immediately. This should be used with caution as it, potentially break the reading cycle, and if the text is long it will be too obtrusive. Use it with caution and only when the user really needs to know about the change (maybe a payment notification or something similar)off- It turns off notification to a user using a device about the change of a content. Useful when there are some changes happening that are purely visual and it is not important. Essentially, when you want to prevent unnecessary distractions. It would work well with ads.