The document discusses the Common Technical Document (CTD), which is a standardized format for submitting documentation to regulatory agencies in Europe, Japan, and the United States. It describes the CTD's five modules, which contain administrative information, summaries, quality data, nonclinical study reports, and clinical study reports. The CTD format was developed by international drug regulatory bodies to harmonize the technical requirements for marketing new pharmaceuticals. It has been adopted as the standard application dossier across major global drug markets.