The document discusses SAP Web Dispatcher 7.40, which is a load balancer that intelligently distributes traffic to SAP Portal instances. It can handle stateful or stateless sessions over HTTP or HTTPS invisibly to clients. It supports round-robin load distribution to backend systems like Tomcat. It can also handle multiple SSL certificates and domains. Key features include reliability, ability to handle high loads, security, custom error handling, and maintenance modes. SAP Web Dispatcher is included free with SAP licenses.