If you are looking to sell your products and services online, then go for Ecommerce website.
Websites like ebay.com, amazon.com are all ecommerce websites.
Here, a user purchases a product or service online through internet. Payments are made through credit card or net banking account.
Sochtek provides designing, developing and programming of ecommerce websites.
One has to buy payment gateway method and for secure transactions SSL certificate is required.