Final answer:
AWS DynamoDB's key advantage over HBase is its automatic scalability, allowing it to handle varying workloads effortlessly without manual intervention.
Step-by-step explanation:
The student's question revolves around the advantages of AWS DynamoDB over HBase. Comparing these two NoSQL databases, a key advantage of DynamoDB is its scalability. Unlike HBase, which typically requires manual intervention to scale, DynamoDB offers the ability to scale automatically and handle increased loads without downtime. This is a significant benefit in cloud computing environments where workloads can be unpredictable and demand can change rapidly. Moreover, AWS's managed service takes care of the underlying infrastructure, provisioning, setup, configuration, and replication, allowing developers and businesses to focus more on application development rather than database management.