Who is a customer?
Customer is a person or a company, that buys products or services from other company.
Doing a business is not just about selling something. Companies have to care about customers and provide them a great support service too. Customers often have many questions and queries about products and services. They can communicate with agents by channels, e.g. by emails, Facebook messages or live chat. But they do not have any access to LiveAgent features. They can create some forum posts or feedbacks in customer portal.