Twitter, Inc. operates as a global platform for public self-expression and conversation in real time. The company offers various products and services, including Twitter that allows users to create, distribute, and discover content; and Periscope, a mobile application that enables user to broadcast and watch video live with others. It also provides promoted products and services, such as promoted tweets, promoted accounts, and promoted trends, which enable its advertisers to promote their brands, products, and services. In addition, the company offers a set of tools, public APIs, and embeddable widgets for developers to contribute their content to its platform, and syndicate and distribute Twitter content across their properties and enhance their Websites and applications with Twitter content. Further, it provides subscription access to its public data feed for data partners. The company was founded in 2006 and is headquartered in San Francisco, California.