301 redirect is a permanent redirect process from one site to another. The redirect practice is an effective way to send the message to both your customers and the search engines that the page has already been removed.
With 301 redirect option, after the migration, whenever customers access your old URLs, they will be automatically redirected to the new ones.
The key difference between 301 redirect option and SEO URLs migration is while the former creates two URLs, the later only allows one working. As a result, 301 redirect option passes all the power score to your new URL.
Note: This service is available for every eCommerce platform except for OpenCart
