A Sticky Banner in UI design is a prominent top section of a webpage or app, typically used for branding, navigation, and key information. It can display logos, menu links, promotions, or important messages. Types include static, rotating, and sticky banners. Design considerations focus on clarity, responsiveness, and accessibility. Best practices include concise messaging, visual hierarchy, and consistency with the overall design. Sticky Banner improve user experience by ensuring key information is easily visible.