As buckets can contain a virtually unlimited number of keys, the complete results of a list query can be extremely large. To manage large result sets, Amazon S3 uses pagination to split them into multiple responses. Following is a pseudo-code procedure that demonstrates how to iteratively fetch an exhaustive list of results, given a prefix, marker and delimiter.

function exhaustiveList(bucket, prefix, marker, delimiter) :
    do {
        result = AmazonS3.list(bucket, prefix, marker, delimiter);
        // ... work with incremental list results ...

        marker = max(result.Contents.Keys, result.CommonPrefixes.Prefixes)
        // or more conveniently, when delimiter != null
        // marker = result.NextMarker;
    }
while (result.IsTruncated);