A Standing Group of Secretaries (GoS) has been constituted on e-Commerce by Ministry of Commerce and Industry. GoS under the Chairmanship of Secretary, Department for Promotion of Industry and Internal Trade (DPIIT) is constituted to ensure inter-ministerial/inter-departmental coordination on resolving issues, cutting across Ministries and Departments of Government of India in e-Commerce. Who is present Secretary of DPIIT?