**What is DynamoDB Standard?**
- It refers to the default storage class for data storage. It offers high durability, availability, and performance characteristics suitable for most use cases.
**What is DynamoDB Standard-IA?**
- It stands for DynamoDB Standard - Infrequent Access. It is a storage class designed for data that is accessed less frequently but still requires durability and availability. Standard-IA offers lower storage costs compared to the standard class, making it ideal for scenarios where data access patterns are less frequent.