Customer service is the provision of service to customers before, during and after a purchase. wikipedia.org

Photography is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light-sensitive material such as photographic film. wikipedia.org

Sales operations is a set of business activities and processes that help a sales organization run effectively, efficiently and in support of business strategies and objectives. Sales operations may also be referred to as sales, sales support or business operations.

Sales management is a business discipline which is focused on the practical application of sales techniques and the management of a firm's sales operations. wikipedia.org

Social customer service is a form of customer support delivered via social media channels, such as Twitter, Facebook, and etc. that requires social agents to engage in conversations in a very public forum.