Drop-In UI is currently in a Developer Preview state. The feature is actively worked on and the interfaces may change but we're excited to share it with the community and get to your feedback.
Drop-In UI is a pre-made navigation layout composed of standalone Navigation Core and UI components the SDK has to offer, with a Mapbox Map underneath. The system implements all stages of navigation and transitions between them, and facilitates integration using few lines of code. Drop-In UI gives you enough customization options to keep your branding, and to replace standalone Navigation UI components with custom made ones to support the unique needs of your use case.