You need to set up a highly available, globally distributed database that supports ACID transactions for an e-commerce application. Which GCP service should you use?
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Correct answer: Cloud Spanner with multi-region configuration.
Why this is the answer
*Explanation:* For a highly available, globally distributed database supporting ACID transactions in an e-commerce application, the ideal choice is **Cloud Spanner with multi-region configuration**. Cloud Spanner offers strong consistency, horizontal scalability, and global distribution, making it a suitable database for such use cases. Cloud SQL with Read Replicas (Option B. doesn't provide the same level of global distribution and might not fully support ACID transactions. Firestore (Option C. is designed for document-based data and may not meet the performance and transactional requirements of an e-commerce database. Cloud Bigtable (Option D) is a NoSQL database and does not support ACID transactions. Cloud Spanner in a single-region configuration (Option E) lacks the global distribution required for high availability.
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