Arlington, Virginia, lured in Amazon with promises of a helipad and a cash grant of up to $550 million

It's official. Arlington, Virginia, is one of three places where Amazon has chosen to expand following the company's much-hyped HQ2 contest.

The newly branded National Landing area — defined by Arlington County as encompassing parts of the Pentagon City and Crystal City neighborhoods in Arlington and the Potomac Yard neighborhood in Alexandria — will be splitting HQ2 with the Long Island City neighborhood in New York City, while a new location in downtown Nashville, Tennessee, will function as an operations hub, according to Amazon.

Arlington in particular was long viewed as a frontrunner in the melee among North American localities.

Read more: Amazon officially announces its HQ2 will be split between New York and Virginia

So what did Virginia offer Amazon to seal the deal?

In the official announcement detailing its HQ2 picks, the tech giant included proposals from the county manager and the Commonwealth of Virginia.

Here are some of the biggest takeaways from the agreement:

• Amazon guaranteed that it would bring in 25,000 new jobs with an average wage above $150,000.
• As part of a "phase two" of the HQ2 rollout, the tech giant said it would create an additional 12,850 jobs.
• In return, Virginia agreed to bestow a cash grant of up to $550 million — $22,000 for each new job — to Amazon over the next 12 years.
• The cash is off the table if Amazon doesn't deliver on its promise of mass job creation.
• Arlington County is also prepared to throw some serious cash Amazon's way — $23 million over 15 years — as part of a grant based on the "Transient Occupancy Tax" levied on hotel rooms.
• That money depends on Amazon bringing in "business-related travelers who will stay in Arlington."
• Arlington County has also pledged to help the tech giant secure approval to build a helipad.
• Amazon has said Arlington will benefit from "4 million square feet of energy-efficient office space with the opportunity to expand to 8 million square feet."
• Amazon estimated that Arlington would accrue an incremental tax revenue of $3.2 billion over the next 20 years as a result of HQ2.
• Virginia plans to work to make the area more accessible for an influx of new Amazon employees by putting $195 million toward infrastructure projects like the Crystal City and Potomac Yards Metro stations, pedestrian crossings along Route 1, and a pedestrian bridge between National Landing and Ronald Reagan Washington National Airport.

Read more about Amazon's HQ2 project:

• Amazon officially announces its HQ2 will be split between New York and Virginia
• Amazon finally explains why it's cutting its second headquarters in half
• Amazon gained a huge perk from its HQ2 contest that's worth far more than any tax break
• New York City has lured Amazon with more than $1.5 billion in incentives — here's what else they agreed to
• We walked around Long Island City, the New York neighborhood where Amazon is planning to bring HQ2, and saw why it'd be appealing to the e-commerce giant