[[introduction]] = Introduction Spring Session provides an API and implementations for managing a user's session information while also making it trivial to support clustered sessions without being tied to an application container-specific solution. It also provides transparent integration with: * <>: Allows replacing the `HttpSession` in an application container-neutral way, with support for providing session IDs in headers to work with RESTful APIs. * <>: Provides the ability to keep the `HttpSession` alive when receiving WebSocket messages * <>: Allows replacing the Spring WebFlux's `WebSession` in an application container-neutral way.