An anti-corruption and anti-bribery policy is vital for businesses to maintain integrity and fair competition. It ensures employees conduct business ethically and comply with laws. Best practices include conducting risk assessments, providing clear guidelines and regular training, monitoring and reviewing the policy, and establishing reporting mechanisms. Case studies from companies like Sanofi and Publicis Groupe provide examples to benchmark policies. Such policies are crucial for corporate responsibility, and continuous improvement helps combat corruption and maintain an ethical business environment.