A company caches session data in a DynamoDB table and wants an automated way to remove expired session items. What is the simplest way to automatically delete old items?

DynamoDB Time To Live (TTL) is the simplest and most cost-effective way to automatically delete expired items from a DynamoDB table. You define a TTL attribute (e.g., expirationTime) in your table, which stores a timestamp indicating when an item should no longer be retained. DynamoDB then automatically deletes items with an expired TTL attribute, freeing up storage and reducing costs without consuming write capacity. Writing a script for deletion is more complex, requires managing an EC2 instance, and consumes write capacity. Creating a new table daily is inefficient and complicates data retrieval. Adding an ItemExpiration attribute without enabling TTL does not automatically delete items; it only stores the expiration time.