When having an e-commerce website developed you need to choose a web company or programmer that is highly trained and has the expertise that it requires. E-commerce websites allow the visitor to purchase a product or service from you site. Once they confirm their basket options they are then re-directed to a secure payment gateway. These gateways are normally designed by a third party although you can create your own but it is extremely costly and can be a lengthy process.
It is very important that the website is programmed in a secure way as to ensure that not only are the customers detailed secure and protected by that the product information that you are sending through to the checkout cannot be changed. There are certain rules and procedures that must be adhered to when running an e-commerce website and your developer should be able to run through these with you.