An educational series on the EU's soon-to- be-implemented General Data Protection Regulation (GDPR)Most marketers think about customer data in terms of its potential use. Personal data fuels campaigns, tailors landing pages and drives bottom line results. How can they be effective under GDPR?To begin, they need to think about the basis of their efforts. Does it begin with consent tied to specific use? Or was this data obtained by other means?Secondly, do you have the capability to prove....