When the General Services Administration (GSA) first dreamed up a shared authentication platform that would allow citizens to log in to dozens of government websites with a single username and password, they planned to tackle the project internally. But as more and more government agencies became interested in the product that would later become Login.Gov, the list of required features grew exponentially—as did the security requirements. To serve more than 30 million potential end-users, the GSA knew they would need support from a partner who could build responsive tools and work in an agile, iterative, and secure way. They wanted to use Amazon Web Services (AWS) tools to get the job done—and to enhance security and streamline user experience, they called AWS Partner Enquizit.