An adequacy decision is a ruling by the European Commission that determines whether a non-EU country offers a level of personal data protection that is essentially equivalent to that provided within the European Union. When such a decision is made, personal data can flow freely from the EU to that country without requiring additional safeguards or authorizations. This mechanism is crucial for international business and data transfers, ensuring that EU citizens' data remains protected even when processed abroad. Adequacy decisions are based on a thorough assessment of the third country's legal framework, enforcement mechanisms, and respect for fundamental rights.