A company that provides customer-only content to subscribers of its service. For example, AOL. This term has broadened to include companies (such as CDNs) that provide online services for other companies. Most traditional OSPs now offer Internet access (like an ISP), but their main feature is a privately maintained network that is only accessible to their subs. Because OSPs control the structure and content of their networks, they are considered user-friendly environments, especially for newbies. Unfortunately, however user-friendly they are, they do not display all of the Web's content for their customers.