As BuzzFeed transitioned to a microservice platform build on Amazon ECS, it needed to secure a growing number of independent internal apps. The first solution was an open source OAuth proxy service deployed in front of each app, but this approach had a number of issues. In this talk, software engineer, Shraya Ramani, discusses BuzzFeed's experience and introduces SSO, a centralized authentication solution, which elegantly solved the problems faced by the company.