About FQDNs

A Fully Qualified Domain Name (FQDN) is a unique identifier assigned to each Wix service entity.

The standard FQDN naming structure looks like: wix.<domain?>.<product>.<version>.<entity>.

For example:

An entity's FQDN is returned in every webhook (except for legacy webhooks) and may be required in endpoints that work with entities from other Wix services.

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