Abstract
Cloud computing is the delivery of computing services, such as storage, processing power, and software applications, via the internet. Cloud computing offers various advantages and opportunity to construction industry, such as cost reduction, improving quality, enhancing productivity, and fostering innovation. Nigeria is lagging behind in this technological advancement due to lack of awareness, resistant to knowledge, which lead to lack of empirical evidence on the impact of cloud computing on project delivery and performance in Nigeria. The adoption and application of cloud computing in the construction industry is still low and limited in Nigeria. This study is aim at filling the gap by conducting a comprehensive study on the concept, adoption, impact, and perceive benefits of cloud computing in construction project delivery in Nigeria. To achieve this, mix-method of analysis was used, to asses, identify, determine, and evaluate the level of adoption of cloud computing in construction industry in Nigeria. From the findings, the level of adoption of cloud computing in the construction industry in Nigeria was moderate. The most adopted cloud service model was software as a service SaaS, followed by platform as a service, PaaS and infrastructure as a service IaaS. The most adopted cloud deployment model was public cloud, followed by hybrid cloud and private cloud. The factors that influenced the adoption and usage of cloud computing were organizational factors, individual factors, and environmental factors. Cloud computing has a positive and significant impact on the project delivery, in terms of time, cost, quality, and sustainability, as it enables the project managers to deliver the project faster, cheaper, better, and greener, by using the cloud services and solutions that suit their project needs and demands. The study recommend, The increase of the awareness and understanding of cloud computing among the construction project site managers, and to provide them with the necessary training and education, to enhance their knowledge and skills of cloud computing, and to increase their confidence .

Keywords: Cloud computing, Empirical Evidence,Project Delivery

Key words: Keywords: Cloud computing, Empirical Evidence, Project Delivery