Electronic commerce, commonly known as E-commerce or eCommerce, is trading in products or services using computer networks, such as the Internet. (Wikipedia)

If you want to sell anything on your website, you will need to use an eCommerce platform. You may also need to purchase a SSL Certificate.

A SSL Certificate is a certificate to secure payments through your website.

 

Some examples of common payment options:

Paypal

4Square

WooCommerce

Authorize.net

Stripe

For more information on a eCommerce package go here