1. Open-Policy Agent: conftest: write tests against structured configuration data using the open policy agent rego query language (2019). github.com/open-policy-agent/conftest
2. The Kubernetes Authors: Custom resources (2021). v1-20.docs.kubernetes.io/docs/concepts/extend-kubernetes/api-extension/custom-resources/
3. The Kubernetes Authors: Kubernetes documentation/concepts/services, load balancing, and networking/service (2021). kubernetes.io/docs/concepts/services-networking/service/
4. The Kubernetes Authors: Kubernetes documentation/concepts/workloads/workload resources/deployments (2021). kubernetes.io/docs/concepts/workloads/controllers/deployment/
5. The Swagger Authors: Openapi specification (2021). swagger.io/specification/