Name

AWS

Azure

Description

Relational database

RDS

SQL Database
 
Database for MySQL
 
Database for PostgreSQL
 
Database for MariaDB

Managed relational database services in which resiliency, scale and maintenance are primarily handled by the Azure platform.

Serverless relational database

Amazon Aurora Serverless

Azure SQL Database serverless
 
Serverless SQL pool in Azure Synapse Analytics

Database offerings that automatically scales compute based on the workload demand. You're billed per second for the actual compute used (Azure SQL)/data that's processed by your queries (Azure Synapse Analytics Serverless).

NoSQL

DynamoDB (Key-Value)
 
SimpleDB
 
Amazon DocumentDB (Document)
 
Amazon Neptune (Graph)

Azure Cosmos DB

Azure Cosmos DB is a globally distributed, multi-model database that natively supports multiple data models including key-value pairs, documents, graphs, and columnar.

Caching

ElastiCache
 
Amazon MemoryDB for Redis

Cache for Redis

An in-memory–based, distributed caching service that provides a high-performance store that's typically used to offload nontransactional work from a database.

Database Migration

Database Migration Service

Database Migration Service

A service that executes the migration of database schema and data from one database format to a specific database technology in the cloud.