In its selection of New York City as one of two places for a new headquarters, Amazon revealed a key necessity for such a big investment in one community. The tech giant first had to make sure that Mayor Bill de Blasio and Gov. Andrew Cuomo would get along in shepherding the project. More than 200 places vied to be a second (or third) headquarters for Amazon.
Source: https://www.yahoo.com/news/key-ingredient-amazon-selection-process-213958596–politics.html