Silicon Alley build a US$2 billion graduate school of applied sciences on Roosevelt Island, with the goal of transforming New York City into the world's premier technology capital. As of 2013, Google's second largest office is located in New York. Verizon Communications, headquartered at 140 West Street in Lower Manhattan, was in 2014 in the final stages of completing a US$3 billion fiberoptic telecommunications upgrade throughout New York City. This revival was not restricted to Lower Manhattan, but was spread throughout New York City. Hence "Silicon Alley" has been considered by some observers to be an obsolete term. Silicon Alley Silicon Alley,
Silicon Valley supports innovation and entrepreneurship. Attempts to create "Silicon Valleys" in environments where disruptive innovation does not go over well have a poor track record. The San Francisco Bay Area has the largest concentration of high-tech companies in the United States, at 387,000 high-tech jobs, of which Silicon Valley accounts for 225,300 high-tech jobs. Silicon Valley has the highest concentration of high-tech workers of any metropolitan area, with 285.9 out of every 1,000 private-sector workers. Silicon Valley has the highest average high-tech salary in the United States at $144,800. Largely a result of the high technology sector, the San Jose-Sunnyvale-Santa Clara,