- Number of hosted providers available is growing, maybe reflective of interest
- Elastic.co acquired Found.io and now offers Elastic stack as a service
- QBox offers ElasticSearch across multiple cloud providers
- Bonsai.io offers data encrypted at rest for ElasticSearch
- http://www.searchly.com/ - I use it for ElasticSearche proof-of-concepts as it offers free tier
- Amazon ElasticSearch Service requires AWS subscription, a tad tedious to setup and to connect