Amazon just announced Amazon Aurora PostgreSQL Serverless service

The database is usually the most critical part of software architecture and managing databases, especially relational ones, has never been easy. For this reason, we created Amazon Aurora Serverless, an auto-scaling version of Amazon Aurora that automatically starts up, shuts down and scales up or down based on your application workload.

You won't need fixed RDS instances or EC2 instances with database servers attached to auto-scaling groups. This would be a good improvement regarding saving cost and scaling capabilities.

So, if you have a dev/qa environment you don't need to have a database running all the time, now using serverless service, it would be charged on-demand saving a lot of money.

For production purpose, you don't need to handle auto or manual scaling by yourself anymore. Handling traffic peaks would be as easier as any serverless(on-demand) service.

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