Judgment_paragraph 57 · Stanley International Betting Ltd and Stanleybet Malta Ltd v Ministero dell'Economia e delle Finanze and Agenzia delle Dogane e dei Monopoli (C-375/17)

57In that context, the purpose underlying the principle of transparency, which is a corollary of the principle of equality, is essentially to ensure that any interested operator may take the decision to tender for contracts on the basis of all the relevant information and to preclude any risk of favouritism or arbitrariness on the part of the licensing authority. It implies that all the conditions and detailed rules of the award procedure must be drawn up in a clear, precise and unequivocal manner to, first, make it possible for all reasonably informed tenderers exercising ordinary care to understand their exact significance and interpret them in the same way and, second, to circumscribe the contracting authority’s discretion and enable it to ascertain effectively whether the tenders submitted satisfy the criteria applying to the relevant procedure (judgment of 16 February 2012, Costa and Cifone, C‑72/10 and C‑77/10, EU:C:2012:80, paragraph 73 and the case-law cited).