Which Azure database offers global, low-latency access with automatic multi-region replication for a mobile app?
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Correct answer: Azure Cosmos DB.
Why this is the answer
Azure Cosmos DB is a globally distributed, multi-model database service designed for high availability, low latency, and automatic multi-region replication. Its ability to distribute data across multiple Azure regions with transparent multi-master replication makes it ideal for mobile applications requiring global, low-latency access. Azure SQL Database and Azure Database for MySQL are relational databases that can be replicated across regions but do not offer the same native global distribution and multi-master capabilities as Cosmos DB. Azure Table Storage is a NoSQL key-value store, but it lacks the advanced global distribution and low-latency features of Cosmos DB for complex mobile application scenarios.
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