The development of new technological solutions should provide better economic and operational results for companies and the ability to assimilate these technologies can be a fundamental characteristic for organizations. Asset management represents an important part of the composition of various business models, especially in complex projects, not only in terms of cost but also in terms of results. According to this context, the present work aims to analyze the assimilation of technology in the management of intelligent assets in complex projects, through a multiple case study, identifying the technologies used as well as the possible factors that affect the assimilation of technology in the management of assets. The Technology-Organization-Environment-TOE framework and Technology Acceptance Model (TAM) to analyze the main factors that influence the assimilation of technology in the management of intelligent assets in large construction projects. The contribution of the study is the integration of the concepts of asset management and technology assimilation. This integration allows to structure a theoretical framework of technology assimilation in complex projects, by identifying assimilation factors in each phase of the asset management cycle.