Practical application of Agile methodology, DevOps automation and Cloud Native Architecture principles to Data API services Modern cloud-native systems demand scalable, self-healing architectures to manage multi-tenant environments efficiently. This paper presents the design and implementation of an autonomous tenant management framework for MZinga.io, a cloud-native data API service. The solution integrates Kubernetes Operators, GitOps workflows (leveraging ArgoCD), and an event-driven architecture grounded in RabbitMQ. These components collectively mitigate the shortcomings of conventional Azure DevOps pipeline-centric methodologies, which often introduce external dependencies and complicate on-premise deployment scenarios. The principal contributions of this work include: Declarative Resource Orchestration: Custom Resource Definitions (CRDs) streamline the management of tenants, projects, and environments, facilitating cluster-native resource orchestration without external tooling.