This commentary summarizes the work done by in the Word Domains modulewithin the Autotyp initiative, including scholarship on prosody-morphology interfaces and the Prosodic Hierarchy Hypothesis. The commentary includes the methods and findings from the Word Domains module, as well as ongoing initiativesand methodological challenges. The commentary then turns to how the case studies include in this volume expand/deepen/improve upon the work started by WordDomains, also including some commentary on challenges highlighted by this workand some possible directions for future initiatives.