The growing demand for scalable and resilient cloud infrastructure has accelerated the adoption of multi-cloud strategies   across             enterprises. Organizations increasingly use multi-cloudenvironmentstoreducevendorlock-in, optimize operational costs, and improve disaster recovery capabilities. This review examines key areas such as containerization, hybrid orchestration, Infrastructure as Code (IaC), GitOps automation, and security frameworks. Research findings show that cloud-edge integration can reduce latency by up to 30%, while GitOps-based automation decreasesdeploymenttimeby73.2%.The study highlights the importance of Kubernetes, Terraform, and zero-trust security models in building secure, flexible, and efficient multi-cloud ecosystems.

keywords: Multi-Cloud Architecture, Container Orchestration, Infrastructure as Code, GitOps, Cloud Security, Edge Computing.