Hi Naman,
Entitlement processes are timelines that include all the steps (or milestones) that your support team must complete to resolve support records like cases or work orders. Each process includes the logic necessary to determine how to enforce the correct service level for your customers
Entitlement process versioning lets you update existing entitlement processes, even if they’re assigned to active entitlements and cases. This can be useful if the business rules behind your entitlement processes change, for example, or if you need to create multiple versions of the same entitlement process that have only minor differences.