Udyog Aadhar was the earlier MSME registration framework introduced by the Government of India to simplify the process for micro, small, and medium enterprises seeking official recognition. Under this system, business owners could register online and receive a unique Udyog Aadhar Number (UAN), which served as a critical identity for accessing government schemes and benefits. Though the system was widely used and helped millions of small businesses formalize their operations, it has now been replaced by the more advanced and efficient Udyam registration portal. However, many businesses still hold valid Udyog Aadhar certificates and may need to download or reference them for transitional purposes. The Udyog Aadhar system offered a simple, Aadhaar-based online process with limited documentation, making it especially helpful for new entrepreneurs and small firms unfamiliar with government procedures. Over time, the need for better verification, automated classification, and enhanced digital integration led to the development of the Udyam portal, which offers faster processing, lifetime validity, and a more secure registration mechanism. Although Udyog Aadhar is no longer the primary method for MSME registration, businesses are encouraged to migrate to the Udyam system to continue receiving benefits and maintain updated records with government authorities. Migrating ensures access to improved credit facilities, subsidies, tender opportunities, and modernized verification tools. The older Udyog Aadhar system marked an important step toward digital governance for MSMEs, and its evolution into the Udyam portal represents the government’s commitment to strengthening and supporting small industries with more robust digital solutions.