Query serving systems is a modern term for systems that focus on storage and compute they have 3 key features , serve large data-parallel, low lacenty and batch updates they can be divided in the next categories: OLTP CockroachDB Postgres OLAP Druid Clickhouse Search Systems ElasticSearch Solr Vector DB’s Pinecone Vespa Graph DB’s Neo4j Dgraph Data lakes Delta Lake Hudi Data warehouse Snowflake Redshift