1. Computer system for integration of web portal content elements into a web portal application, comprising: context observer module configured to detect context data and provide the detected context data to a context launch transformation module; the context launch transformation module is configured to comprise transformation logic and execute the transformation logic depending on detected context data to generate a subtree of dynamic content nodes accordingly; a dynamic assembly module configured to associate transformation logic to an extension node being comprised in the memory tree, wherein said dynamic assembly module is further configured to provide the subtree of dynamic content nodes to an aggregation module; the aggregation module configured to insert the subtree of dynamic content nodes below the extension node wherein the aggregation module is configured for integating content nodes representing content elements into the memory tree reflecting a web portal application; and the portal server module for providing the web portal application to at least one user.