What is Cutover?
Cutover is the tightly choreographed set of activities that switches an organization from the legacy system to the live ERP system.
Definition
Cutover refers to the transition activities that move an organization from its old systems and processes onto the new ERP at go-live. It encompasses final data migration, validation, opening of the new system, closing or freezing of legacy systems, and confirmation that everything is ready for users on day one. Cutover is governed by a detailed, time-sequenced runbook that lists every task, owner, dependency, and timing, often executed over a freeze window such as a weekend or holiday to minimize business disruption. Because many steps must complete in order and some cannot be undone, cutover includes go/no-go checkpoints and rollback criteria. A well-rehearsed cutover, often trialed in mock cutovers, is essential to a smooth go-live.
How Cutover Works in ERP
An ERP cutover is typically rehearsed through one or more mock cutovers that time the full sequence, especially the data migration loads, so the team knows the window is achievable. During the real cutover, transactions in the legacy system are stopped, final and delta data is migrated and reconciled, and integrations and security are verified before users are let in. A go/no-go meeting against predefined criteria authorizes opening the system, after which hypercare support begins.
ERP Vendors with Strong Cutover
SAP S/4HANA Private Cloud
Fully customisable managed-cloud ERP for complex enterprises
Oracle ERP Cloud
Enterprise cloud ERP with deep financials and analytics
Microsoft Dynamics 365
Modular ERP + CRM tightly integrated with Microsoft 365
Infor M3
Process manufacturing ERP for food, chemicals, and pharma
Frequently Asked Questions
What is a mock cutover and why does it matter?
A mock cutover is a full rehearsal of the cutover runbook, including timed data migration, run in advance to prove the sequence fits the available window and to catch issues. It reduces the risk of the real cutover overrunning or failing, which would jeopardize the go-live date.
What is the difference between cutover and go-live?
Cutover is the full set of transition activities, such as final data migration and switching systems, that prepare for launch, while go-live is the moment the new ERP becomes the system of record that users transact in. Go-live happens at the successful conclusion of cutover.