With the GDPR in force, the way is changing how advertisement performance is tracked on European news sites. According to a study by Reuters Institute for the Study of Journalism
the usage of third-party cookies decreased in Europe by 22 percent per page while third-party domains decreased by 4 percent since the GDPR became enforceable. However, reactions to new data regulations highly differ from country to country: In Germany
for example habits did not really change while in France and the UK marketing
decision makers decide to purge this tracking methods.