E-commerce websites aow you to sell products online to you customers over the Internet. They can use a Computer, Laptop, Tablet or even a Smartphone nowadays! You can take online payments through your bank merchant account or you can just have it work as catologue system that sends an email with your banking details for and EFT.
Having an online store for you business can cut down costs as you no longer need to rent space for a store or have many of the usual overheads that come with a traditional shop. Your E-commerce store is also open 24/7, allowing you to sell products and take payments even while you are sleeping or even better, on holiday with your loved ones.