Data residency.

also: data sovereignty · data localization · data localisation · data residency requirements

Where data is physically stored and processed; residency rules require some data to stay within a country or region.

the two-minute refresher

Residency = where data lives; sovereignty = whose laws apply; localisation = a legal requirement to keep it in-country.
Architectures: one region (simple, can't comply), regional deployments (strong compliance, complex), or a global control plane with regional data.
Assign each tenant a home region and route its data and processing there.
Cross-border transfers need a legal basis such as SCCs.

also: data sovereignty · data localization · data localisation · data residency requirements

Where data is physically stored and processed; residency rules require some data to stay within a country or region.

Residency = where data lives; sovereignty = whose laws apply; localisation = a legal requirement to keep it in-country.
Architectures: one region (simple, can't comply), regional deployments (strong compliance, complex), or a global control plane with regional data.
Assign each tenant a home region and route its data and processing there.
Cross-border transfers need a legal basis such as SCCs.