Sure it does. You can create an IAM user, give that user only PutObject permissions to your bucket, and publicly share the key/secret key for that IAM user. The

Sure it does. You can create an IAM user, give that user only PutObject permissions to your bucket, and publicly share the key/secret key for that IAM user. Then people can use those creds with any s3 upload utility. Alternatively you could probably make a static web form that does that automatically thus isolating people from the need to understand S3 utilities. You could even make it drag/drop enabled so that literally all one has to do to upload a file is drag it to a web page.