Amazon Kinesis Data Firehose now supports streaming data delivery to Amazon Elasticsearch Service version 7.x clusters for near real-time data analysis and visualization. Kinesis Data Firehose automatically scales to match the throughput of your data and handles all of the underlying stream management. 

from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/10/amazon-kinesis-data-firehose-adds-support-data-stream-delivery-amazon-elasticsearch-service/