Amazon's low-Earth orbit internet project has hundreds of satellites sitting idle in Florida, ready but waiting for launch rides. Steve Metayer, Amazon's VP of Leo Production Operations, confirmed the buildup during a press call ahead of Wednesday's Ariane 64 mission. That rocket will lift 36 satellites from French Guiana starting at 7:53 am ET.

Four years ago, Amazon secured launch contracts with three new rockets to deploy its planned constellation. The company booked 18 Ariane 6 launches plus options, 12 Blue Origin New Glenn flights, and 38 United Launch Alliance Vulcan missions. So far, only Arianespace has delivered consistent service, completing two launches this year with more scheduled.

Amazon has launched 331 satellites primarily on Atlas V rockets, but ULA is retiring that vehicle after one final mission. New Glenn and Vulcan remain unflown for Amazon's constellation, leaving the company dependent on European launch capacity. Metayer praised Arianespace's reliability and on-time performance.

Amazon's constellation deployment now hinges on Arianespace delivering the remaining 16 contracted launches while waiting for domestic rocket alternatives to mature. The delay puts pressure on Project Kuiper's timeline to compete with SpaceX's Starlink.