Case Study: Telefónica reaches audiences in cookieless environments with ID5

Telefónica reduces CPA by 54% with ID5

Telefónica, a major telecommunications provider, partnered with vendor ID5 to address the challenge of reaching audiences effectively as third-party cookies became obsolete. This shift was driving up advertising costs and reducing ROI, so Telefónica and its agency Havas needed a new solution for targeting, measurement, and frequency capping in cookieless environments.

The solution implemented was the ID5 ID, a universal identifier that enables addressability while respecting user privacy. By adopting this product, the campaign achieved a significant measurable impact, including a 34% reduction in cost per lead (CPL) and a 54% reduction in cost per acquisition (CPA), proving the effectiveness of ID5's solution in cookieless advertising.

Telefonica