Cloud migration is mostly a planning problem
The technical move matters, but the hidden work is usually in sequencing, testing, and rollback.
Moving to the cloud is rarely hard because of one giant technical blocker. It is usually hard because the team has to line up dependencies, schedules, security checks, and a clean rollback path.
Good migration work starts by separating what can move quickly from what needs more care. That reduces surprises and makes it easier to keep production stable while the change happens.
A smooth migration is usually the result of careful boring planning, not heroic effort.