AWS Technical Essentials 2025 – 400 Free Practice Questions to Pass the Exam

In DynamoDB, the Map data type allows for a flexible structure as it can contain multiple key-value pairs, with the keys being strings and the values being any DynamoDB data type, including other Maps, Lists, Strings, Numbers, and Booleans. This flexibility enables you to model complex data structures or nested information in a way that aligns with the requirements of your application.

For instance, if you have an object that represents a user, the user might have a name, an email, and additional attributes like address details that themselves could be another Map. This hierarchical organization makes it easier to store and retrieve related pieces of information without the need for rigid table schemas, which are often required in traditional relational databases.

Other data types mentioned, such as String, List, and Number, each have their defined scope and limitations. Strings are used purely for textual data, Lists can hold an ordered collection of values but do not allow for key-value pairs, and Numbers are limited to numerical data. These do not provide the structural flexibility that a Map offers, making Map the preferred choice for representing complex and nested data structures.