In some European countries, you may be required to anonymize (or mask) part of the IP address of your website visitors. Dynamic Yield lets you enable IP Address Anonymization on individual Dynamic Yield sites.
When IP Address Anonymization is enabled, Audiences based on City will not work anymore. However, the City targeting condition will continue to work, as it is evaluated in real-time on the client-side and does not require any storing IP address data.
To enable IP address anonymization, contact your Customer Success Manager.