Presented at Next.js Conf 2023. View all talks from the conference here: https://www.youtube.com/playlist?list=PLBnKlKpPeagl57K9bCw_IXShWQXePnXjY Explore templates of sites built with Next.js: https://vercel.fyi/verceltemplates Check out the Vercel product tour: https://vercel.fyi/producttour Modern web applications demand authentication that is fully secure and a delightful experience for users. Let’s explore what it looks like to build a capable authentication system that takes full advantage of the strengths of Next.js, and why you might not want to build one.