InfoQ - policy https://www.infoq.com InfoQ policy feed Airbnb Cuts Authentication Code by 60% with Server Driven Architecture https://www.infoq.com/news/2026/09/airbnb-server-driven-login/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=policy <img src="https://res.infoq.com/news/2026/09/airbnb-server-driven-login/en/headerimage/generatedHeaderImage-1787593560494.jpg"/><p>Airbnb redesigned its authentication architecture around server driven flows and policy based challenge selection. The new Flexible Authentication system reduced authentication related code by 60%, cut the web client bundle by 100 KB, improved successful authentication by 2.6%, reduced duplicate account creation by 27%, and lowered OTP costs by 11%.</p> <i>By Leela Kumili</i> User Experience Scalability Web Distributed Systems Web Applications policy Rule Engines Mobile Development GUI Experiment Driven Development Evolutionary Architecture Identity Management Software Engineering Authentication Architecture Mobile Apps Architecture & Design Development news Fri, 04 Sep 2026 14:30:00 GMT https://www.infoq.com/news/2026/09/airbnb-server-driven-login/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=policy Leela Kumili 2026-09-04T14:30:00Z /news/2026/09/airbnb-server-driven-login/en