You may also be interested in /services/file-importing/s3-import/.
Here are our posts tagged:
Adding recursive imports to our /s3/import RobotSamuel Ogundipe · December 14, 2018
Kicking Transloadit Into Gear for the New Year
video-thumbs-robotKevin van Zonneveld · February 1, 2015
Introducing the new /s3/import RobotTim Koschützki · July 17, 2013