Mastering Cloud Migration Cutover with a Five-Phase Methodology

A cloud migration cutover should be boring.

No drama. No war room. No all-hands-on-deck
at 2 AM hoping nothing breaks.

If your cutover feels like a crisis, the problem
started weeks earlier — at dependency mapping.

This blueprint is the five-phase methodology we
use on every managed migration at Accrets:

Phase 1 — Architecture Assessment: right-size
the environment before a single byte moves.
Over-provisioned cloud VMs are one of the fastest
ways to double your monthly bill.

Phase 2 — Dependency Mapping: trace every
connection between web servers, databases, and
active directories. This is where self-managed
projects fall apart. One undocumented dependency
can break an entire application stack.

Phase 3 — The Parallel Run: both environments
run simultaneously. Data syncs continuously. Your
production system stays untouched. No risk window.

Phase 4 — The Cutover: because of phase 3,
this is almost a non-event. DNS update, traffic
reroute, final delta sync.

Phase 5 — Post-Migration Ops: and this is the
one most people skip. Day 91 is where costs
balloon, patching falls through the gaps, and
configuration drift starts. SLA-backed ops from
day one prevents all of it.

The cutover is not the finish line.
Stable, optimized, monitored ops is.

Full methodology breakdown:

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