Live chat (live support) is technology that provides companies with a way to interact with users when they visit an organization's media properties. ... Live chat is used by sales, marketing and customer support staff to answer questions from customer and prospects. Live chat can take a few forms. For example, it can be a proactive chat pop-up— think of a chat box appearing on your screen and asking if you need help. Clicking on it would connect you to a live agent. Customers can also start a live chat when they're in need.