An application has the following requirements: -Performance efficiency of seconds with up to a minute of latency. -The data storage size may grow up to thousands of terabytes. -Per-message sizes may vary between 100 KB and 100 MB. -Data can be stored as key/value stores supporting eventual consistency. -What is the MOST cost-effective AWS service to meet these requirements?

Questions on how to write code and design scalable applications, implement application security and testing, and on AWS components such as S3, Dynamo DB, Elastic Beanstalk, and CloudFormation.