Amazon’s Prime Instant Video service is on fire in the United States even before Amazon even introduced its $99 Fire TV set-top box.

According to a report from online-video delivery and caching solutions provider Qwilt, streams on Prime Instant Video have almost tripled over the past year — and in the process have passed both Apple and Hulu in terms of volume of video streaming traffic. The data was gathered from MSO broadband providers that use the Qwilt systems.

Currently Amazon stands in third place — with only Netflix and YouTube producing more total online video traffic in the U.S.

I see Amazon as a threat to all media services know the future.