What data structure in Amazon DynamoDB is used to store name-value pair collections?

In Amazon DynamoDB, the Map type is designed specifically to store name-value pair collections. This data structure allows users to create an object that contains one or more key-value pairs. Each key within the Map must be a unique string, while the associated value can be of any DynamoDB data type, including strings, numbers, lists, or even other maps. This flexibility enables developers to store complex data structures easily, making it suitable for representing structured data in NoSQL databases.

For example, when storing user profiles, a Map could be used to hold attributes like first name, last name, and email, each associated with their respective values. This facilitates a more organized way of handling data, especially when dealing with nested or hierarchical information.

The other data types mentioned have different purposes. The String type is used for single text values, the List type is for ordered collections of items, which might not be key-value pairs, and the Binary type is for data that is not represented as text, such as images or files. Thus, the Map type is the correct and most appropriate choice for storing collections of name-value pairs in DynamoDB.