What operation must you perform to delete all items in a DynamoDB table quickly?

To delete all items in a DynamoDB table quickly, deleting the entire table is the most efficient method. When you choose to delete the table, all the data stored within it is removed in a single operation. This action not only clears all items but also removes the table structure itself, allowing you to recreate it if necessary.

Using an operation like DeleteItem for each item would require multiple calls to the database, which can be time-consuming and inefficient, especially for tables with a large number of items. The other options, RemoveItems and ClearTable, do not exist as valid DynamoDB commands, which further highlights why deleting the table is the correct approach for quickly removing all data. Deleting the table ensures that you're also erasing any indexes or configurations associated with it, resulting in a clean slate.