A megaproject is an extremely large scale investmentproject. Mega Projects in Kenya. According to the Oxford Handbook of Megaproject Management, "Megaprojects are large-scale, complex ventures that typically cost $1 billion or more, take many years to develop and build, involve multiple public and private stakeholders, are transformational, and impact millions of people". However, $1 billion is not a constraint in defining megaprojects; in some contexts a relative approach is needed, such as in developing countries, where a much smaller project (such as one with a $100 million budget) could constitute a megaproject. Therefore, a more general definition is "Megaprojects are temporary endeavours (i.e. projects) characterized by: large investment commitment, vast complexity (especially in organizational terms), and long-lasting impact on the economy, the environment, and society".