The Unique Identification Authority of India (UIDAI) is a statutory body established under the Aadhaar Act, 2016, responsible for the issuance and management of Aadhaar numbers. UIDAI oversees the enrollment process through registrars and enrollment agencies, ensuring secure and scalable technology and compliance with the Aadhaar Act. The UIDAI website offers various services related to Aadhaar, including options to obtain and update Aadhaar information.