The General Data Protection Regulation (GDPR), effective from May 25th, 2018, imposes strict rules on businesses concerning the processing of personal data of EU citizens, emphasizing accountability and privacy. It applies to all entities operating in the EU and handling personal data, with significant penalties for violations, potentially up to 20 million euros or 4% of global turnover. Businesses must prepare for compliance, including adjustments in data handling, privacy impact assessments, and ensuring adequate protection against data breaches.