A cookie banner is a pop-up or overlay displayed on websites to inform users about the use of cookies and similar tracking technologies. It typically requests user consent to store or access information on their device, as required by privacy regulations such as the GDPR and CCPA. Cookie banners often provide options for users to accept, reject, or customize their cookie preferences, ensuring transparency and giving users control over their personal data. These banners are a crucial component of compliance strategies for organizations operating in jurisdictions with strict data privacy laws.