How does your website work and actually function? When someone talks about the back-end development of your website, that is what they are referring to. They are talking about the function of your website. If you are running an ecommerce website on a platform like wordpress, this back-end development can include factors like catalog and inventory management, pricing and shopping rules, and overall store functionality. It is important to get all of these things right when it comes to your business because you want your customers to be happy with the functionality of the website, and you want to be sure the website functions for your needs as well.