Magento 2 Guest To Customer _ How does it work?

https://landofcoder.com/magento-2-guest-to-customer.html/

Magento 2 guest to customer extension supports eCommerce site in converting a guest into a registered customer based on the order information. No delay in the checkout process, the shoppers now can place orders quickly from your store without registering, logging in to an account or filling any personal data.