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To attract Amazon, New York’s leaders agreed to remake plans for the Queens waterfront, move a distribution center for school lunches and provide a sweeping package of $1.7 billion in incentives from the state and hundreds of millions more from the city.

They even agreed to allow a helipad for Jeff Bezos, Amazon’s chief executive.

Under the plan, within 15 years the company could occupy as much as eight million square feet of office space, the rough equivalent of three Empire State Buildings.

An image of what life will be like with the arrival of Amazon became clearer on Tuesday, even if many questions remain unanswered.

The company has agreed to follow city guidelines for the design of its outpost in Long Island City. But gone is the city’s vision of a mixed-use community filled with apartments, some of them for residents of more modest means. In its place will rise office buildings that will house 25,000 or more workers. The kayakers bobbing on the East River will now be joined by helicopters overhead.