RDBMS
SQL
OLTP
RDS, Aurora
ElastiCache
Managed Redis / Memcached
DynamoDB
Managed serverless NoSQL database
S3
key / value store for object
DocumentDB
“AWS-implementation” of MongoDB
Amazon Neptune
Fully managed graph database
Amazon Keyspaces
A managed Apache Cassandra-compatible database service
Amazon QLDB
Quantum Ledger Database
A ledger is a book recording financial transactions
Fully Managed, Serverless, High available, Replication across 3 AZ
Used to review history of all the changes made to your application data over time
Immutable system: no entry can be removed or modified, cryptographically verifiable
Amazon Timestream
Fully managed, fast, scalable, serverless time series database