Economy of New York City feet (37.2 million m) that same year, is the largest central business district in the world. New York City is distinctive for its high concentrations of advanced service sector firms in the law, accountancy, banking and management consultancy fields. It is the top global center for the advertising industry, which is metonymously called "Madison Avenue". Silicon Alley, metonymous for New York's broad-spectrum high technology sphere, continues to expand. Finance, high technology, real estate, insurance, and health care all form the basis of New York's economy. The city is also the nation's most important center for mass media, journalism, and publishing.
Silicon Beach other technology companies had facilities—"Silicon Beach, in deference to the great valley of the West". In 1984 Silicon Beach Software was formed in San Diego, California. "Silicon Beach Australia" was used to describe that country's internet technology community in 2008. There are four significant areas in Australia that are nurturing start-ups: Sydney, Melbourne, Brisbane, and Perth. Silicon Beach Silicon Beach is the Westside region of the Los Angeles metropolitan area that is home to over 500 tech startup companies, with emphasis on the coastal strip north of LAX to Santa Monica Mountains, but the term may be applied loosely or