Kubernetes is the de facto standard for managing, deploying, and scaling containerized applications. The true beauty of Kubernetes lies in its extensibility, allowing developers to go beyond using default resources and define their own resources to meet specific applications’ needs. Custom Resources elevates Kubernetes to a realm of unparalleled adaptability. They allow users to extend the Kubernetes API, defining new object types tailored to unique application requirements. With an intuitive declarative syntax, custom resources provide a clear and concise means to express complex application configurations within Kubernetes. This session embarks on a journey to understand the structure and usage of Custom Resources by diving deep into the explanation of CustomResourceDefinition (CRD) and custom controllers. We will see how this concept helped organizations to manage their workloads. Lastly, we will see the practical implementation of utilizing custom resources through MongoKube.