Magento 2 permits clients to checkout without making a record in the store.
In any case, it is advantageous for the business in the event that greatest clients make a record in the Magento 2 store. Yet, making it compulsory would just deteriorate the client experience.
Hence, the solution is to use Meetanshi’s Magento 2 Guest to Customer extension that facilitates the admin to convert guest to customer Magento 2.
Consequently convert the visitor clients to enlisted clients after checkout from the Magento 2 backend.
Switching visitors over completely to clients in Magento 2 store assists with gathering the most extreme client information. Further, this information can be useful in creating a viable methodology for showcasing.
Moreover, the client information can be put to use to offer a customized client experience when they visit the store from now on.
For more info, visit : https://meetanshi.com/blog/convert-guest-to-customer-in-magento-2/