Web Push Notifications are messages sent from a website to a user's device, even when the user is not actively browsing the site. These notifications can appear on desktops, tablets, or smartphones, providing updates, alerts, or promotional content. Users must opt-in to receive these notifications, ensuring they have control over what information they receive. These notifications are designed to engage users and keep them informed about new content or offers. They can be customized by the website owner to target specific audiences, making them a valuable tool for enhancing user experience and driving traffic back to the site.