Architecture & practice·Legacy systems and migration
the servers moved to the cloud unchanged, and the bill went up while nothing got faster.
Lift and shift
Also calledrehosting
Moving a system to new infrastructure with as few changes as possible. It is a legitimate first step — it buys a deadline, retires a data centre, and defers the redesign — as long as everyone understands that no architectural problem has been solved. It becomes a mistake when the second phase is assumed rather than funded, because the migrated system now costs more and behaves the same.