During our migration from Jira server to Jira cloud I am looking to make sure we set our server instance to READ-ONLY. What I have found through my research is to set up a permission scheme and a user group. Then once the migration begins give all the users the group and set the permission scheme to all projects. Within the permission scheme it only has access to "Browse".
Are there any other ways to complete this task or is this the best process to do during this migration?
Any and all information would be greatly appreciated.