DeploymentConfig resource is deprecated and should be replaced with Deployment. Nevertheless glossary section explains DeploymentConfig just as normal. Newbies might think of DeploymentConfig as more convenient than Deployment.

4.20, 4.19

Always.

1. Access to the following content.

(4.20)
https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/overview/getting-started-openshift-common-terms_openshift-editions

(4.19)
https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/overview/getting-started-openshift-common-terms_openshift-editions

2. Go to "Deployment and DeploymentConfig" part.

You can confirm that DeploymentConfig might be seen as normally supported resource by novice people.

Maybe you should insert warning that inform users that DeploymentConfig is deprecated. You might be able to reuse warning message from the following documentation.

https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/building_applications/deployments#what-deployments-are

> As of OpenShift Container Platform 4.14, DeploymentConfig objects are deprecated.

DeploymentConfig is deprecated as following documentation says.

https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/workloads_apis/deploymentconfig-apps-openshift-io-v1#deploymentconfig-apps-openshift-io-v1

> Deprecated: Use deployments or other means for declarative updates for pods instead.