A company's eCommerce web application is deployed on AWS and makes extensive use of shopping cart data, which should be retained only for the duration of the customer's browsing session. Each shopping session involves numerous read and write operations. The company's key requirement is that the shopping cart's performance should not be impacted by other customer activity or scale issues. Which storage option should be utilized to manage shopping cart data in order to meet these requirements?
Amazon Relational Database Service (RDS) with provisioned IOPS
Amazon DynamoDB with a TTL (Time to Live) policy
Amazon Elastic File System (EFS) with lifecycle management
Ephemeral storage on an Amazon EC2 instance