Process : -> Files can flow into Amazon S3 through any channel. ->File creation in Amazon S3 produces an event you can catch with a Lambda function. ->The Lambda function retrieves data and metadata from Amazon S3, and pushes it into Amazon ES. ->Using Direct Amazon ES API calls or, at a larger scale, Amazon Kinesis Data Firehose can be used to populate Amazon ES. -> You can also use Logstash, which is a data-collection and log-parsing engine. ->Further you can use Comprehend to analyse the data behavior