Electronic commerce draws on technologies such as mobile commerce, electronic funds transfer, supply chain management, Internet marketing, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems. Modern electronic commerce typically uses the World Wide Web for at least one part of the transaction’s life cycle, although it may also use other technologies such as e-mail.
eCommerce System serve your customer 24/7. Anytime, any place your customer wish to browse for your products, they just need to surf around your eCommerce website.
What you need to prepare is providing products details with some attractive photography, introduction of your products and provide convenience payment method. Payment method could be using the international payment gateway such as Paypal to accept for master/visa card payment or you may request your customer to bank in / transfer payment into your country local bank.
Of course, at finally, you need to have a good shipping services (if what you sell are physical products). Delivery should be on time and enabled for customer tracking. Be aware and taking care of packaging to avoid any damage of your shipment.