Hi folks, I am looking for recommendations and clarifications on deployments. In the docs here I see:

We currently support either Elasticsearch or Neo4j as backend implementations for the graph service. We recommend Elasticsearch for those looking for a lighter deployment or do not want to manage a Neo4j database. If you started using Neo4j as your graph service backend, here is how you can migrate to Elasticsearch.

What is the impact of using elasticsearch only deployment and how/when does one “graduate” to the neo4j deployment?