The rise of data clean rooms during the 5G era has given telcos an opportunity to capitalize on information they hold about their customers while conforming with privacy regulations, such as the EU’s GDPR and the California Consumer Privacy Act (CCPA). The overlap with 5G is coincidental, since data clean rooms have been driven by two independent factors. One is the growing demand for accurate and rich customer data for targeting services or content. The other is the increasingly stringent culture of privacy regulation bearing down on the use of cookies and third-party data gathered without explicit customer consent. These opposing forces have driven techniques for deriving greater value from accurate first- and zero-party data, while enriching it from anonymized or…