The survey thoroughly discusses the meta splicing of AI, cloud computing, DevSecOps and Cyber security and their successful application on digital infrastructure of contemporary age. It explores implementation of scalable cloud-native architectures, adoption of DevSecOps into CI/CD pipelines as well as use of AI in threat detection, compliance monitoring, and as part of secure software delivery. The paper also presents an increasing area of research in the form of generative AI for synthetic data generation, AI-powered fraud detection in financial systems, Kubernetes-based multi-cloud orchestration, zero trust security for distributed environments. It is a domain focused systematic literature review that looks at domain specific applications such as SAP, ERP systems and synthesizes results from different research works. The report offers insights into current approaches, new technologies and future directions to enable agility, security and intelligence across enterprise-level computing environments.