Explore passwordless authentication and federated identity mechanisms in this 25-minute Devoxx conference talk. Delve into the challenges of traditional login systems and discover modern solutions that enhance security and user experience. Learn about passwordless strategies, their implementation, and the concept of federated identity. Gain insights into how these technologies can simplify authentication processes for both developers and users. Examine the evolution of authentication methods, including multifactor authentication and single sign-on. Understand the implications of data security regulations like GDPR and explore how Platform-as-a-Service (PaaS) technologies can be leveraged to implement these advanced authentication mechanisms.