Web Push is a technology that allows websites to send notifications directly to users' devices, even when the website is not open. These notifications can include updates, promotions, or reminders, helping to keep users engaged with the content or services offered by the site. To receive Web Push notifications, users must first opt-in by granting permission through their web browser. Once subscribed, users can receive timely alerts on their desktop or mobile devices, making it easier for them to stay informed about important information from their favorite websites.