A document database stores, retrieves, and manages document-oriented information, also known as semi-structured data. Document databases often store data in a denormalized fashion as opposed to normalized data, which would appear in a relational database.

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One of the more interesting aspects of DocumentDB that sets it apart from other document databases is that it lets you tune the consistency.

To handle the massive scale and performance requirements for their highly anticipated game (over 1,000,000 downloads and 31M minutes played on opening weekend alone), the Next Games development team chose to implement their backend services on Azure. For their persistence layer, which needed to ingest massive volumes of game profile and state metadata while serving low latency queries (under 10 ms), they selected Azure DocumentDB, the fully managed NoSQL JSON database.