Our client 8.5 to 8.8 and wants to do the complete upgrade using Helm Chart - for package as well as frameworks. We use Pega Marketing and Customer Service in two different applications and both will be upgraded. The application is deployed in a Kubernetes Container on google cloud.
@GOURABKETAN please can you confirm that you already found the below documentation?
Installing, patching, or updating Pega software
Containerized deployments in Kubernetes environments
Virtual machine deployments of Pega Platform
Upgrading Pega Platform in your deployment with zero-downtime
Pega Customer Service Upgrade Checker
Could you clarify what is your exact question so that we might find the relevant SME to help answer this for you?