Walmart has been turning up the heat over their domestic competition with Amazon.

Walmart has now filed for 97 drone patents against Amazon’s 54. When it comes to deliveries, drones are now in the central spotlight. As companies look to provide faster, more efficient, and more innovative ways to complete delivery orders, a race has kicked off to see who can pull off drone deliveries more efficiently. Walmart is already on the way to filing more drone patents than Amazon for the second year in a row, according to data cited by the Financial Times.

Autonomous vehicles (AVs) are being employed across various industries and are widely regarded as the way of the future. The big players, such as Walmart and Amazon, have taken a closer interest in drones. Amazon is inching closer to launching drone deliveries, and the Chief Executive of Amazon’s worldwide consumer division has reported that the eCommerce giant will begin delivering products to customers via drones “within months.”

There is effectively a global race to deploy an efficient drone delivery service, as making this idea a reality would change the game completely. The commercial drone market is set to take off in the near-future, as giants like Amazon rush to deploy drones as a key component of their services. Amazon is joined by Walmart, DHL, and UPS in the race to launch a drone delivery service.

The drone wars won’t come without some confusion and some significant obstacles to overcome. When you look at the delivery processes employed by drones right now, there are several ways in which drones pick up and deliver packages. This will certainly lead to variations in the costumers’ experiences, which may cause consumers to adapt more slowly. There is also a lack of standards for drone operations at the moment, which may slow down the time it takes for drones to be adopted on a larger scale.