 There are different rules regulating procurement of public services, as Law nº 8.987, 13 February 1995 (Concession and Permission of Public Services); Law nº 12.462, 4 August 2011 (Differentiated Procurement – RDC in Portuguese) and Law nº 10.520, 17 July 2002, with deal with presential auction.In the internet field (e-procurement) there are executive orders (Decretos) which regulate public procurement, such as Decree nº 5.450, 31 May 2005 and Decree nº 7.982, 23 January 2013