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Which Google Cloud relational database service is globally distributed, strongly consistent, and horizontally scalable — designed for high-scale OLTP workloads that outgrow a single regional database?

ACloud Bigtable
BCloud Spanner
CCloud Storage Nearline
DCloud SQL
Answer & Solution
Correct answer: B. Cloud Spanner
Spanner is the global, strongly-consistent, horizontally-scalable relational DB. Cloud SQL is regional managed MySQL/Postgres/SQL Server (good up to a single primary). Bigtable is wide-column NoSQL (not relational). Nearline is a storage tier, not a database.
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