Ian Wagner, an expert in mapping technology and software development, dives into the complexities of creating open-source mapping libraries. He introduces Ferrostar, a versatile navigation tool built with Rust, Kotlin, and Swift, enhancing user experiences across multiple platforms. Ian shares insights on navigating diverse data sources, routing challenges, and Rust's role in cross-platform integration. He also discusses the exciting intersection of augmented reality and urban navigation, highlighting future possibilities in mapping technologies.