Session management in web applications, essential for a seamless user experience, can be achieved through JSON Web Tokens (JWTs) or JSCookies, each serving distinct needs and architectures. JWTs offer a stateless approach by embedding user authentication data within a signed token that can be verified by any server, making them suitable for scalable, distributed systems like microservices and mobile apps. In contrast, JSCookies rely on stateful server-side sessions, using cookies to store session IDs that enable the server to fetch session data, which is beneficial for applications requiring tight control and security, such as monolithic or browser-focused setups. While JWTs facilitate horizontal scaling by eliminating the need for centralized session storage, their stateless nature requires careful handling to prevent security vulnerabilities like cross-site scripting (XSS). Conversely, JSCookies, especially with proper configuration, offer more secure session management but can burden server resources as the application scales. Developers should weigh the trade-offs between these methods based on their application's architectural requirements, security considerations, and scalability goals, ensuring they adopt best practices like HTTPS and secure cookie attributes to protect user data.