Transactions in DynamoDB are designed for which type of operations?

DynamoDB transactions are specifically designed to support coordinated, all-or-nothing operations across multiple items, which is a vital feature for maintaining data consistency and integrity. This allows developers to group multiple interdependent operations into a single transaction, ensuring that either all operations succeed or none at all. This is particularly important in scenarios where failing to execute all operations could lead to data inconsistencies.

For instance, if you are managing inventory and you need to update the quantity of multiple items based on a single order, using a transaction allows you to execute all the necessary updates atomically. This means that if one of the updates fails, none of the changes will be applied, preserving the state of the database.

Other options focus on operations that either limit the scope to a single item, suggest asynchronous behavior that could lead to partial updates, or involve only deletion actions, all of which do not align with the core functionality of DynamoDB transactions designed for comprehensive, multi-item operations.