The document discusses the Common Technical Document (CTD), which provides a standardized format for submitting documentation to regulatory authorities for approval of pharmaceutical products. It describes the evolution and adoption of the CTD internationally and in India. The CTD aims to streamline the drug approval process and facilitate simultaneous reviews by different regulators. It is organized into five modules covering administrative information, summaries, quality, nonclinical data, and clinical data. Widespread use of the CTD format has allowed for greater harmonization and efficiency in global pharmaceutical development and regulation.