cloud
The Cloud Migration Checklist for Companies Still Running Legacy Infrastructure
Legacy migrations fail more often from sequencing mistakes than from technical ones. Teams try to modernize architecture and migrate infrastructure in the same project, which doubles the risk surface and makes it nearly impossible to isolate what broke when something inevitably does.
Migrate first, modernize second. Move the existing system to new infrastructure with as few changes as possible, validate it behaves identically under real load, and only then start refactoring toward the target architecture. This sounds slower up front and is almost always faster overall, because you are never debugging two categories of change at once.
Inventory what actually depends on the legacy system before touching it — scheduled jobs, third-party integrations, and internal tools built on assumptions nobody wrote down are the most common source of migration surprises, far more than the core application itself.
Plan the rollback path before the migration, not during an incident. If you cannot articulate exactly how you would revert to the legacy system within the first hour of a failed cutover, the migration is not ready to schedule yet.
Apeniq has run legacy-to-cloud migrations for teams that could not afford downtime during the transition — reach out if an aging system is starting to limit what your team can ship.