We are restructuring our environments by removing some microsoft servers/instances/hardware and move into Amazon cloud web service (e.g. DynamoDB)

I know the Amazon charges the service based on the usage of the service, it makes sense for production environment, but we have dev, systest, uat environments that need to move to cloud as well and we don't want the company paid money for the usage due to internal development or testing process.

Is there any best practice that can avoid/reduce cost

Thanks

Ming