SuperMap iPortal is a GIS resource portal platform that is responsible for publishing GIS services from SuperMap iServer. It allows users to integrate, discover, share, and manage various GIS resources. Key features include resource integration from heterogeneous GIS servers, discovery of resources through fuzzy search and filtering, sharing of resources at different access levels, and multi-level management of resources based on organizational structure and permissions. The portal also supports customization and creation of web applications and data apps.