[2][3] As of March 2023, AWS introduced some compliance with MongoDB 5.0 but lacks time series collection support.
DocumentDB provides single document lookups, index scans, regular expression queries, and aggregations.
DocumentDB was an enhancement to the Amazon Aurora relational database system,[5] specifically the PostgreSQL-compatible edition.
Its architecture separates storage and computing so that each layer can scale independently, though the system is limited to a single writable primary.
This storage engine is distributed, fault-tolerant, self-healing, and durable, which it maintains by replicating data six ways across three AWS Availability Zones (AZs).