The Planning Commission, established in March 1950 under Jawaharlal Nehru, was restructured as NITI Aayog on January 1, 2015, under Prime Minister Narendra Modi, aiming to improve India's economic policies and resource utilization. NITI Aayog serves as a think-tank with advisory functions, unlike the Planning Commission that had more power in fund allocation. Major initiatives include the Swachh Bharat Mission and the Smart City Mission, along with criticism from opposition parties regarding the efficacy of the change in structure.