# Locality Aware Load Balancing
A multi-zone deployment can enable locality aware load balancing in a particular Mesh to ensure optimal service backend routing. This feature relies on the following service tags to make decisions of selecting the destination service endpoint:
kuma.io/region- optional, denotes a wider region composed of several zones.
kuma.io/zone- automatically generate in every multi-zone deployment.
kuma.io/subzone- optional, denotes service grouping within a particular zone.
# Enabling the Locality Aware Load Balancing
Mesh that spans several regions, zones or subzones, may choose to enable locality aware load balancing as follows: