> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sendrealm.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create Audience Property

Audience properties define server-owned contact data that can be used for
audience targeting and personalization.

Properties are authoritative by default. Set `sdk_writable: true` only when the
mobile SDK is allowed to manage that value as a client-sourced tag. Keep account,
billing, lifecycle, compliance, and verified profile data server-owned.