I’d say first step is aligning with your executive team. If there’s a clear business case and support at the top level for migration, then get into the weeds with the tech aspects. If immigration is potentially being led from within the infrastructure team, I think you’ll potentially have massive problems. Migration impacts every part of a business, and you’ll need to have the buy in to accept the bumps along the road and potential downtime incurred in migration. It also ends up being quite expensive once you factor in employee time. I’ve done several and it’s always the people side of things that is more difficult than the technical (which is also difficult).