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Which AWS purpose-built database is BEST suited for catalog/session/key-value workloads with single-digit-ms reads, automatic horizontal scaling, and no schema management?
AAmazon RDS PostgreSQL single-AZ
BAmazon Redshift
CAmazon DynamoDB
DAmazon S3 alone
Answer & Solution
Correct answer: C. Amazon DynamoDB
DynamoDB is AWS's purpose-built key-value/document NoSQL (per SAP-C02 §4.4). RDS is RDBMS; Redshift is OLAP; S3 isn't OLTP-ms.
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