# When to use Placement Rules

+ Need to enable fine-grained data placement, controlling local and cross-region access to data
+ Need to specify the number of replicas to improve the availability and data reliability of important business
+ Segregate the business according to level, resource requirement, or data lifecycle
+ Business data integration, reducing operational costs and complexity
+ Data placement control at the geo-location level offers two options: `PRIMARY_REGION` and `REGIONS`
+ Data placement control at a fine-grained level offers two options: `CONSTRAINTS` and `FOLLOWER_CONSTRAINTS` 

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No speaker notes.