Reviewing the information governance framework should be the CIO's primary focus before the migration, because it will help the CIO to ensure that the enterprise's data and applications are secure, compliant, and aligned with the business objectives and policies in the cloud environment. The information governance framework defines the roles, responsibilities, processes, standards, and metrics for managing information assets across the enterprise. It also covers aspects such as data classification, data quality, data protection, data retention, data sovereignty, and data privacy. By reviewing the information governance framework, the CIO can identify the requirements, risks, and gaps that need to be addressed before moving to the cloud. The other options are not as important as reviewing the information governance framework, because they are either dependent on or secondary to it. Selecting best-of-breed cloud offerings is a tactical decision that should be based on the information governance framework and the enterprise architecture. Updating the enterprise architecture repository is a good practice, but not a primary focus before the migration. It can be done after the migration to reflect the changes in the IT landscape. Conducting IT staff training to manage cloud workloads is a necessary step, but not a primary focus before the migration. It can be done in parallel with or after the migration to ensure that the IT staff have the skills and knowledge to operate and optimize the cloud environment. References := Migration environment planning checklist, Practical Guide to Cloud Governance, Governance or compliance strategy