RDA is a new cataloging standard designed to replace AACR2 and provide guidelines for describing digital resources. It is based on FRBR and FRAD which are models that organize information by user tasks and relationships between entities like works, expressions, manifestations and items. RDA aims to be more intuitive for users by providing more detailed descriptions of resources and is being tested by various libraries and organizations before its full implementation. However, some questions remain regarding its costs and benefits compared to AACR2.