Database Showdown: Deep Analysis of the Advantages and Application Scenarios of Azure Cosmos DB and Amazon DynamoDB

What is Azure Cosmos DB and Amazon DynamoDB?

Azure Cosmos DB is a globally distributed, multi-model NoSQL database service provided by Microsoft. It supports multiple APIs, including SQL, MongoDB, Cassandra, Gremlin, and Table, making it suitable for a variety of use cases.

Amazon DynamoDB is a fully managed, highly available NoSQL database service provided by Amazon Web Services (AWS). It supports key-value and document data structures and offers built-in backup, high availability, and scalability features.

Key Features Comparison

Feature	Azure Cosmos DB	Amazon DynamoDB
Data Model	Supports key-value, document, graph, and wide-column data models	Supports key-value and document data models
API Support	SQL, MongoDB, Cassandra, Gremlin, Table	Key-value and document only
Global Distribution	Supports global distribution, covering multiple Azure regions	Supports global distribution, covering multiple AWS regions
Elastic Scalability	Auto-scaling, supports high throughput and low latency	Auto-scaling, supports high throughput and low latency
Consistency Model	Provides five consistency models: eventual consistency, strong consistency, session consistency, bounded staleness, and consistent prefix	Supports eventual consistency and strong consistency
Backup and Restore	Automated backups, supports data recovery	Automated backups, supports data recovery
Pricing	Billed based on request units and storage capacity	Billed based on request units and storage capacity