Amazon is an electronic commerce company launched in 1995 that deals in online shopping, web hosting, and content distribution. It employs over 132,000 people and is available in several languages. Amazon uses different business models and strategies for promotion, including search engine optimization, email marketing, and affiliate marketing. Its backend processes include four software development centers worldwide and uses Linux-based systems with large databases to run its operations. In 2013, Amazon reported $74.45 billion in revenue and $274 million in net income.