A portal is a website with data that is customized for the individual user. A Customer portal allows you to interact with customers that do not have a license to access your Quick Base data by providing secure, permissions based information you want them to see. Portals provide the opportunity to share files, plan, organize as well as manage activities, tasks and events in a private online environment.
Avant has worked with Data Collaborative on several different projects, with excellent results. They do what they say, when they say, and charge what they say. Highly recommended!