Building for Multi-Region: Data Residency Without the Headache
Residency Is a Product Requirement Now
Data residency has moved from a niche compliance ask to a routine requirement in enterprise deals. Customers want their data processed and stored in specific regions, and increasingly the law requires it.
Building for residency after the fact means re-architecting; building for it early is far cheaper.
Separate Data Plane From Control Plane
The key architectural move is separating where data lives from where the system is coordinated. The control plane can be global; the data plane must respect regional boundaries.
This split lets you run one logical service while keeping each customer's data physically where it must be.
Route at the Edge
Residency starts at the front door. Requests need to be routed to the correct regional stack based on the customer, before any data is touched.
Getting routing right at the edge means a European customer's request never reaches a system outside its allowed region in the first place.
Make It Field-Level Where Needed
Not all data is equally sensitive. Fine-grained residency, pinning specific fields to a region while less-sensitive data flows freely, gives you compliance without crippling functionality.
Aurus supports region and field-level residency at the gateway, so teams meet strict requirements without forking their application per market.
