AWS (Amazon Web Services) Certification Practice Exam

Which benefit does DynamoDB provide compared to traditional databases?

1. Support for multi-region deployments

2. Ability to run complex queries efficiently

3. No need for backup strategies

4. Automatic tuning of data indexing

The correct answer is: Support for multi-region deployments

DynamoDB's benefit of supporting multi-region deployments stands out when comparing it to traditional databases. This feature allows users to replicate their data across multiple geographical locations to enhance availability and durability. In a multi-region setup, DynamoDB ensures that even if one region experiences an outage, the data can remain available in other regions. This is crucial for applications requiring high availability and disaster recovery mechanisms, making it easier to adhere to global regulations and provide consistent performance to users around the world. While traditional databases can be set up for multi-region scenarios, they often require complex configurations, maintenance, and management overhead. DynamoDB simplifies this process, enabling applications to easily scale and manage global traffic while ensuring low-latency data access. The other options present functionalities that might exist in various forms but do not convey the same level of innovation and benefit universally provided by DynamoDB compared to traditional database architectures. For instance, the ability to run complex queries efficiently is generally a strong suite of traditional relational databases, while automatic tuning of data indexing and strategies for backups require careful implementation and architecture considerations in traditional systems, which often do not offer the same level of automation as DynamoDB.