AWS Technology Usage

Athena + S3

Tracking information. Cheap to save and pay on-demand

DynamoDB

Fast access. Known query pattern (Partition Key, Sorting Key). Scale up automatically if partition it right. TTL should be considered and dump historical data out. (how?)

SQS

RDS

Elastic Cache

Athena

ECS

Load Balancer

Query S3s by SQL (Presto).