Explore the intricacies of securing Web APIs in Azure with this comprehensive conference talk from NDC Sydney 2024. Delve into the challenges of building secure APIs for both external and internal applications, users, and systems. Learn about various authentication and authorization strategies tailored to different customer and system needs. Discover Azure's built-in security features for internal users and applications, as well as external provider options like Auth0 for external users. Gain insights into mapping authentication and authorization strategies to diverse communication scenarios. Examine a complete end-to-end example using .NET 5 and Azure, providing a practical playbook for common and complex security scenarios encountered in Web API development.