A mobile game needs single-digit-millisecond reads at massive scale for player session data — key-value lookups only, no joins or SQL. Which database service fits?
A.Amazon RDS
Relational DB is heavier than needed for pure key-value access.
B.Amazon DynamoDB
Correct. NoSQL + ms latency + serverless scale = DynamoDB.
C.Amazon Redshift
Redshift is a data warehouse for analytics, not operational reads.
D.Amazon Aurora
Aurora is relational — same mismatch as RDS.
Why this answer
DynamoDB is the serverless NoSQL key-value/document store delivering consistent millisecond performance at any scale — built for session/lookup workloads. RDS/Aurora are relational (joins, SQL); Redshift is analytics.
Correct answer: B · Last reviewed 2026-10-26
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