e-Commerce websites are really like any other websites with the exception of having a shopping cart, catalog and detail pages so your customers can get a feel for your products. In a regular brick and morter business customers come in and get to touch, feel and see your products. That way they get to decide if they want to buy it or not. The same is true on the internet. Customers want to see, feel and touch the products but unfortunately they can not feel it! However, they sure can see it by the magic of photographs. The catalog pages are like your store, products are lined up so customers can see them and if they are interested in one, they can drill down to a page with more detail, a larger picture or several pictures, the size and color and any other information that maybe useful to them along with a button for them to purchase the item.
The other difference is e-commerce websites tend to be dynamic versus regular website which are static. That means your pages are displayed from a database rather than being statically placed on your monitor. That works better for ecommerce websites since the bulk of the information being displayed is kept in the database and when a customer demands it, the website fetches it from the databse and displays it all in a blink of an eye.
e-Commerce websites can be managed by you or by us depending on what your taste is but both are custom made just for your business. So we go through the same procedure from the initial meeting to the end of the project as explained here.