The Azure Cloud plugin allows to use Azure API for the unicast discovery mechanism and add Azure storage repositories.
'org.elasticsearch.plugin:cloud-azure:2.1.2'
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>cloud-azure</artifactId>
<version>2.1.2</version>
</dependency>
<dependency org="org.elasticsearch.plugin" name="cloud-azure" rev="2.1.2"/>
"org.elasticsearch.plugin", "cloud-azure", "2.1.2"