This is also known as “Lift & Shift” and involve moving application to cloud without making significant changes

Lift the application, make some changes and Shift (One database engine to another database engine)

This we called as Rephrase as well. This means moving to different product example SaaS Solution

This is referred as Re-engineering, Application transformation where full redesigning is involved to get more Cloud benefits.

Application will not be moved to cloud and will be retained to on-premises.This is specificaly applicable to Legacy Apps.

Organization decides to decommission application and will no longer needed for business use.