Complex IT outsourcing relationships aptitude several benefits such as increased cost likelihood and lowered costs, higher scalability and flexibility upon demand. However, by virtue of its complexity, the complex outsourcing typically necessitates the interactions among various stakeholders from diverse regions and cultures, making it significantly more challenging to manage than traditional outsourcing. Furthermore, when compared to other types of outsourcing, complex outsourcing is extremely difficult because it necessitates a variety of control and coordination mechanisms for project management, which proportionally increases the risk of project failure. In order to overcome the failure of projects in complex outsourcing relationships, there is a need of robust systematic research to identify the key challenges and practices in this area. Therefore, this research implements systematic literature review as a research method and works as a pioneer attempt to accomplish the aforementioned objectives. Upon furnishing the SLR results, the authors identified 11 major challenges with 67 practices in hand from a total of 85 papers. Based on these findings, the authors intend to construct a comprehensive framework in the future by incorporating robust methodologies such as AHP and fuzzy logic, among others.

Green cloud computing gains popularity over the last decade due to the extensive use of cloud computing. The trend towards cloud computing is spreading at a fast rate. Cloud computing providers extend their data centers at regular intervals. However, cloud providers face severe issues about sustaining the environment because big data centers are responsible for consuming a vast amount of energy and producing a carbon footprint. The solution to address such an issue is green cloud computing. In the literature, a considerable amount of research has been done to determine the challenges and practices in adopting green cloud computing. Still, the field is immature and needs further research to identify the challenges and practices faced and addressed by various stakeholders. This research focuses on identifying the challenges faced by client organizations in adopting the green cloud and the associated practices for addressing the challenges. The challenges and patterns were identified via a systematic literature review from the relevant literature. After thorough conduction of the systematic literature review (SLR), we have identifies 9 challenges and 63 practices from 68 papers in the cloud domain. In the future, we plan to develop a comprehensive framework by using some robust soft computing techniques like Fuzzy logic or AHP, etc., to assist the clients in adopting the green cloud environment.

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