If you are not familiar with osCommerce, this chapter will tell you what it is, what benefits it can bring you, and a little bit of very useful content. "Commerce" means "business," and "os" is the English abbreviation for "Open Source," which in Chinese is called "开放源代码." Hereafter, it will simply be referred to as "open-source." The name osCommerce represents "open-source business software." To elaborate further, osCommerce is an application program that helps establish an online store via the internet, so we can call it an "open-source online store program."