Using social media as a marketing tool
Social media websites can help grow a business in terms of brand awareness, sales and enquiries. Some companies only use social media to give their customers information such as where they are based, contact details and a brief overview of the business, whereas others will use it more like a website adding lots of products, services, images and videos and allowing people to enquire about anything they sell through the social media sites.
Some businesses even sell products through the social media sites allowing people to bid or agree to purchase items. Although the initial sale may be done through the social media sites, you cannot actually take payment through them so this would need to be done separately through PayPal or similar.
Social media marketing can literally build your business overnight and many companies start off their online presence this way then progressing on to their own standalone website.