Azure Cosmos DB vs Neo4j

Azure Cosmos DB is a globally distributed, multi-model database service by Microsoft offering single-digit millisecond latency and 99.999% availability SLA. It supports document, key-value, graph, and column-family data models with multiple API options.

Neo4j is Graph database that stores and queries data as nodes and relationships using the Cypher query language.. It is available under a freemium model. This tool falls under the databases category.