Case Study: Telefónica achieves improved customer insights and reduced churn with Mostly AI synthetic data

Telefónica’s Analytics Projects Get the Fuel They Need With Synthetic Data

Telefonica faced stalled analytics and AI initiatives because roughly 80–85% of customer data was inaccessible due to lack of consent and the risk of consent being withdrawn, leaving critical customer behavior hidden and blocking compliant analysis. To solve this, Telefonica partnered with Mostly AI and its synthetic data platform to create a GDPR-safe, statistically equivalent copy of its CRM Datamart.

Mostly AI synthesized several million CRM records into datasets that preserve real statistical patterns without containing original data, enabling Telefonica to run analytics and AI projects compliantly. The Mostly AI solution delivered measurable impact — 100% GDPR compliance, up to an 85% reduction in data delivery time, and improved customer understanding that helped reduce churn and increase satisfaction.

Telefonica