What is the difference between a Portal server and an Application server?
Before understanding portal server, we will have to understand portal. As we know, portal in nothing but a web application. In simple words, a portal server is an application having a portal and its management capabilities. In traditional web application, we have a separate management section for managing the web application. Portal server provides the application as well as that management section. In other words, a portal server is an application deployed inside application server.
Whereas, an application server is a system that provides the execution environment that is at the core of network computing or web-based architectures, providing a full set of services.