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A technical overview of Azure Cosmos DB | Blog | Microsoft Azure
"Azure Cosmos DB is Microsoft’s globally distributed, horizontally partitioned, multi-model database service. The service is designed to allow customers to elastically (and independently) scale throughput and storage across any number of geographical regions. Azure Cosmos DB offers guaranteed low latency 99.99% high availability, predictable throughput, and multiple well-defined consistency models. "
CosmosDB - YouTube (Microsoft Channel 9)