Have you wanted to horizontally scale your data with sharding but not sure what shard key to choose? Already use sharding but would love to refine your existing shard key so that you can unlock the full sharding potential with increased efficiency from targeted queries and control of where your data resides geographically - all without changing your app? In MongoDB 4.4, you now have an improved sharding experience with features like refining a shard key, create a compound hashed shard key, and …