Showing popup saying that website visitors are already buying, signing up, and taking action, which is fully customizable, from timings (where you can use AI as well), blur city name for believability. One can put multiple CTA messages, set how much each product should appear in the popup, and many more micro features. It can be integrated to literally any website, whether it is Shopify, Wordpress, custom code... It doesn't serve only Ecommerce niche, but also SaaS, Infoproducts, Giveaways and many more.
The whole point is to create FOMO feeling among leads, where they go an extra step do to CTA.