Use the S3 output to send your events to an S3 bucket for long term archival or for batch processing at a later time.

With Logstash 1.5, you can add metadata, which is transient in the Logstash pipeline, to an event, thus simplifying your configuration.

Logstash 1.5.4 and 1.4.5 release announcement, addressing important security issues by including the updated features Logstash forwarder & Lumberjack output.