Answer:
Your client is using the "Cloud Pak for Data on Red Hat OpenShift Service on AWS (ROSA)" deployment pattern.
Explanation:
In this pattern, Cloud Pak for Data (CP4D) is deployed on Red Hat OpenShift Container Platform, which is a containerization platform for developing, deploying, and managing containerized applications. OpenShift is a Kubernetes-based platform that provides a consistent experience for developers and operators across cloud and on-premises environments.
By deploying CP4D on ROSA, your client is using a fully managed OpenShift solution on AWS, which allows them to leverage the benefits of AWS infrastructure while still using their existing IBM data management software, such as Db2 and DataStage. This approach minimizes disruption for the business.