The Amazon Web Service (AWS) Cloud plugin allows to use AWS API for the unicast discovery mechanism and add S3 repositories.
'org.elasticsearch:elasticsearch-cloud-aws:2.4.2'
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch-cloud-aws</artifactId>
<version>2.4.2</version>
</dependency>
<dependency org="org.elasticsearch" name="elasticsearch-cloud-aws" rev="2.4.2"/>
"org.elasticsearch", "elasticsearch-cloud-aws", "2.4.2"