Udyog Aadhaar is a twelve digit Unique Identification Number provided by the Ministry of Micro, Small and Medium Enterprises, Government of India for small and medium enterprises, beginning in September 2015. Udyam Registration, Zero cost for registering Udyam Registration(Official Website for MSME Registration) Ease of Doing Buisness shall be filed online free of. Everything That You Should Know About MSME Udyam Registration (Earlier known as Udyog Aadhar). Udyam Registration is the new process of MSME/UDYOG AADHAAR Registration launched by the the Ministry of Micro, Small and Medium Enterprises on July 1, 2020. Udyog Aadhar is not integrated with other govt portal like Gem and treds portal etc but Udyam Registration is fully integrated and registered.