The document discusses eCTD (electronic Common Technical Document), which is an electronic version of the Common Technical Document for submitting drug applications. It was established in 2002 by the M2 EWG and is maintained by the eCTD IWG. The USFDA and European Union now require electronic submission of drug applications using eCTD. Using eCTD provides benefits like better quality, reduced costs from eliminating paper and transportation, faster review times, and reduced environmental impact compared to paper submissions. eCTD submissions can include files in formats like PDF, XML, JPEG, PNG, SVG, and GIF.