European Union General Data Protection Regulation (2018)
May 2018What Happened
The European Union's GDPR took effect on May 25, 2018, imposing strict opt-in consent requirements, data portability rights, and penalties up to 4% of global revenue on any company processing EU residents' data. U.S. technology companies faced immediate compliance obligations regardless of their physical location.
Outcome
Companies worldwide scrambled to update privacy notices, implement consent mechanisms, and appoint data protection officers. Cookie consent banners became ubiquitous. Some U.S. news sites blocked European visitors rather than comply.
GDPR became the global baseline for privacy legislation. California's CCPA, passed months later, explicitly drew inspiration from GDPR concepts while choosing an opt-out rather than opt-in model. The regulation demonstrated that regional laws could effectively constrain global technology companies.
Why It's Relevant Today
GDPR proved that comprehensive privacy regulation was enforceable against major technology platforms. Its extraterritorial reach showed that state-level U.S. laws could similarly force national compliance. The opt-in versus opt-out distinction between GDPR and U.S. state laws remains the key architectural difference.
