Amazon DynamoDB
A fully managed, serverless NoSQL key-value and document database with single-digit millisecond latency.
Amazon DynamoDB is a fully managed, serverless NoSQL database that stores data as key-value pairs or JSON-like documents. AWS handles provisioning, patching, and replication, so there is no database server to manage. DynamoDB automatically replicates data across multiple Availability Zones, providing built-in high availability and durability with single-digit millisecond latency. The key exam distinction: DynamoDB is NoSQL and schema-flexible, while Amazon RDS manages traditional relational databases that require a fixed schema and run on provisioned instances. DynamoDB Global Tables extend replication across AWS Regions for multi-region active-active workloads, a separate concept from standard multi-AZ replication within a single region.
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