Discover the definitive guide to building robust and extensible Golang-based Command Line Interfaces (CLIs) in this comprehensive 30-minute tutorial video. Learn how to create a CLI that multiple teams can contribute to, starting from theory and progressing to practical implementation. Follow along as the instructor demonstrates the creation of a successful CLI used by hundreds of engineers. Explore topics such as multi-contributor CLI development, Cobra and Cobra-CLI usage, structuring for extensibility, building functionality, and implementing Viper configuration. Gain insights into common mistakes and best practices while working with example code. Access the source code on GitHub for further study and experimentation.