The disclosed system relates to the field of network computing, and in particular to method and system for designing a Web Portal including a hierarchical structure of portal pages and portlets for accessing Web contents accessible via the Portal. The disclosed system operates to improve Web application user navigation. During navigation by a user in the topology of the Web portal, the disclosed system automatically senses information about the navigational behaviour of the user for each page visited during said navigation. The disclosed system derives page hits and page target hits from the sensed information, wherein page hits are defined when pages are clicked on for reaching another page, and page target hits are defined when a user clicks on pages in order to perform a page-specific task or to receive some page-specific information. The disclosed system uses at least one predefined metric based on the sensed information for generating a utility ranking for the Web pages visited during the user navigation, and defines a user-specific navigation topology based on a prioritization of the ranked Web pages, wherein higher ranked Web pages are arranged in relatively higher topology levels. The disclosed system displays the user-specific topology to the user after a subsequent user log-in to the Web portal.