Backup and Sync is primarily intended for consumer users. We recommend that our G Suite customers continue to use Drive for Mac/PC until our new enterprise-focused solution, Drive File Stream (currently in EAP), is made generally available to all G Suite Basic, Business, Enterprise, Education, and Nonprofit domains later this year. Drive File Stream will allow users to access huge corporate data sets without taking up the equivalent space on their hard drives.
Google says that at this time it will not automatically upgrade G Suite users from Drive for Mac to Backup and Sync.
Please follow iClarified on Twitter, Facebook, Google+, or RSS for a reminder when Backup and Sync becomes available for download.