There is CloudSearch however it doesn't support schemaless stuff. Looks like this is AWS' answer to that. There's also the issue of CloudSearch taking in docu

There is CloudSearch however it doesn't support schemaless stuff. Looks like this is AWS' answer to that. There's also the issue of CloudSearch taking in document batches rather than individual documents, which means you have to do a fair bit of more leg work to get your stuff in there. ElasticSearch can take in Logstash inputs which is handy and quite performant. Plus a lot of data analysts are used to Kibana so there is some appeal there.