Create two dedicated sandboxes: a migration development sandbox for converting your Omnistudio components to work with the standard runtime, and a migration testing sandbox for thoroughly testing migrated Omnistudio components before you deploy to production.
Before you begin, review About the Migration Process.
When choosing a sandbox environment, consider the sandbox storage limits. A good principle is about 30% extra space for the migration. For more information about sandboxes, see Sandbox Licenses and Storage Limits by Type.
Create the migration development sandbox and migration testing sandbox by making a copy of your production org or refreshing an existing sandbox. We recommend creating or refreshing the sandboxes at the same time. Any differences between the migration development sandbox and migration testing sandbox can cause problems during deployment.
Migration Development Sandbox
Use this sandbox to evaluate your migration readiness, make necessary changes before migration, and then convert your Omnistudio components to work with the Omnistudio standard runtime.
Migration Testing Sandbox
Use this sandbox to test the components you converted in the development sandbox.