Techniques are described herein for performing authentication, and also “eager” or “lazy” fetch of data, for restricted webpages based on the restricted webpages being associated with an authentication tier in an AASD registry. Inclusion of a restricted webpage in the AASD registry enables AASD-based authentication for the webpage. According to embodiments, information for a restricted webpage included in the AASD registry includes one or more of the following for the webpage: an identifier, an authentication level, allowed fields, eager fetch fields, one or more sources for one or more fields, etc. When information for a webpage is included in the AASD registry, that information is used to perform eager fetch for one or more fields of the webpage that are not associated with authentication requirements indicated in the AASD registry information, or whose authentication requirements are already fulfilled by the requesting client.