The site above explains about the retail tech.  It is said that Retail Tech began as Point of Sale, also known as POS. Retail Tech is basically reselling goods.  You could save enough money through POS without sacrificing the quality of the product.

Retailing, for me, is basically just reselling goods or products to the end user or the end consumer. Basically the process is simple. You will get products or goods from the manufacturer then you are obliged to resell it. Retailling is not as complicated as Whole Salling. Whole salling basically have several processes and several stages while retailing just start from the main manufacturer and will end up with the end user.