Transparent, competitive bidding is a sound way for the public sector to buy goods and services. It is also standard procedure for Public-Private Partnerships (PPPs). Besides reducing opportunities for corruption, this approach generally attempts to achieve the best value for money and is perceived as fair by all stakeholders. When the sums involved are big, for example, in large infrastructure projects, transparency in government procurement becomes even more critical. Unsurprisingly, competitive bidding is considered best practice in most countries, not only in the public sector but also for corporations and institutions such as the World Bank Group.