Which Azure service provides a cloud-native, key-value store with sub-millisecond latency?

Azure Cache for Redis is a fully managed, in-memory data store based on the open-source Redis. It provides extremely low-latency (sub-millisecond) data access and high throughput, making it ideal for caching frequently accessed data, session stores, and real-time analytics. Azure Table Storage is a NoSQL key-value store, but it's designed for massive scale and lower cost, not sub-millisecond latency. Azure SQL Database is a relational database service, not a key-value store, and while performant, it doesn't offer the same sub-millisecond latency as an in-memory cache. Azure Cosmos DB is a globally distributed, multi-model database service, offering various APIs including key-value, but its primary purpose is not solely as a low-latency cache like Redis.