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Welcome back to our ongoing series on the Ktor framework and its impressive capabilities when it comes to web application security. In this article, we shift our focus from traditional form-based authentication to a modern, innovative one – JSON Web Tokens (JWT). JWT provides several key advantages that have led to its growing popularity. Firstly, its stateless nature promotes better scalability by eliminating the need to maintain user sessions. Secondly, JWT’s JSON structure guarantees cross-platform compatibility. This means your authentication mechanism works equally well for web apps as it does for mobile apps or other systems. Lastly, JWT proactively increases the security of your applications, preventing attacks like CSRF. So, join us today as we delve into the world of JWT, exploring its mechanics and benefits.