Resumen

In this work, the author analyzes whether public bidding is a general and compulsory administrative procedure to enter into administrative contracts or the State Administration can discretionally choose who and how it contracts and determine at its discretion the selection procedure of the future contractor. In this sense, the procedures of public bidding, private bidding and direct negotiation are studied, with the finality of determining the requirements and conditions that allow public bodies to choose the type of bid selection procedure.