Zero-Touch Provisioning (ZTP) represents a pivotal advancement in cloud infrastructure automation, designed to streamline deployment, reduce manual configuration errors, and accelerate scalability. In enterprise environments where cloud workloads fluctuate dynamically, provisioning speed and consistency are vital to maintaining performance and reliability. ZTP enables automated device and service configuration immediately upon connection to the network, eliminating the need for manual intervention. This review article explores the architectural principles, integration frameworks, and operational benefits of ZTP, with particular attention to its impact on enterprise cloud scalability. It evaluates how ZTP works synergistically with orchestration and automation platforms to enable elastic scaling and continuous availability in hybrid and multi-cloud environments. Furthermore, the paper identifies challenges such as configuration drift, security vulnerabilities, and legacy system constraints that can impede adoption. Finally, it highlights future innovations including AI-driven provisioning, intent-based networking, and predictive resource allocation as emerging directions for ZTP evolution. Through this comprehensive review, the study underscores the critical role of ZTP as a cornerstone of modern cloud management strategies, emphasizing its transformative potential in enhancing operational efficiency, agility, and scalability within large-scale enterprise cloud infrastructures.