1. Export Administration Regulations (EAR): BIS administers the EAR, which controls the export and re-export of most commercial items. Businesses must determine whether their products fall under these regulations and, if so, obtain the necessary licenses. 2. Export Control Classifications: BIS provides businesses with Export Control Classification Numbers (ECCNs) to identify controlled items. Proper classification is crucial for determining licensing requirements. 3. Licensing: BIS processes license applications for the export of controlled items. This includes reviewing applications for compliance with U.S. national security, foreign policy, and economic interests. 4. Compliance and Enforcement: BIS conducts investigations and enforces compliance with export control laws. This includes conducting audits, imposing penalties, and taking legal action against violators.