  Blockchain (BC) and Software Defined Networking (SDN) are some of the most
prominent emerging technologies in recent research. These technologies provide
security, integrity, as well as confidentiality in their respective
applications. Cloud computing has also been a popular comprehensive technology
for several years. Confidential information is often shared with the cloud
infrastructure to give customers access to remote resources, such as
computation and storage operations. However, cloud computing also presents
substantial security threats, issues, and challenges. Therefore, to overcome
these difficulties, we propose integrating Blockchain and SDN in the cloud
computing platform. In this research, we introduce the architecture to better
secure clouds. Moreover, we leverage a distributed Blockchain approach to
convey security, confidentiality, privacy, integrity, adaptability, and
scalability in the proposed architecture. BC provides a distributed or
decentralized and efficient environment for users. Also, we present an SDN
approach to improving the reliability, stability, and load balancing
capabilities of the cloud infrastructure. Finally, we provide an experimental
evaluation of the performance of our SDN and BC-based implementation using
different parameters, also monitoring some attacks in the system and proving
its efficacy.
