New York City is the largest central business district in the world. Silicon Alley, centered in Manhattan, has evolved into a metonym for the sphere encompassing the New York City metropolitan region's high technology industries involving the Internet, new media, telecommunications, digital media, software development, biotechnology, game design, financial technology (""FinTech""), and other fields within information technology that are supported by its entrepreneurship ecosystem and venture capital investments. In 2015, Silicon Alley generated over US$7.3 billion in venture capital investment across a broad spectrum of high technology enterprises, most based in Manhattan, with others in Brooklyn, Queens, and elsewhere in the region. High
Media in the San Francisco Bay Area of Al Jazeera Media Network, is also based in the city. As the home of Silicon Valley, several high technology companies involved with Internet media or social media are either headquartered or have a significant presence in the Bay Area. These include the following: Media in the San Francisco Bay Area The media in the San Francisco Bay Area has historically focused on San Francisco but also includes two other major media centers, Oakland and San Jose. The Federal Communications Commission, Nielsen Media Research, and other similar media organizations treat the San Francisco-Oakland-San Jose Bay Area as one entire media