The HERE SDK is a software development kit that provides developers with tools to create location-based applications. It offers features like mapping, routing, and geocoding, allowing users to integrate real-time location data into their apps. The SDK supports various platforms, including iOS, Android, and Web, making it versatile for different development needs. With the HERE SDK, developers can access high-quality maps and location services, enhancing user experiences in navigation and location tracking. It also includes features like traffic information and points of interest, enabling applications to provide relevant and timely data to users.