Hi koichi, Imagine you have numerous engines across your on prem data centers and some on the cloud, you’re requested to connect to every single admin console to do admin/management tasks on the objects owned by each engine (environment, datasets ... etc). This where central management as a great tool and have it’s added value, as it let you do all management/admin tasks across all your delphix deployments wherever they are on perm or cloud in central maner via only one console. For presales or commercial question hope that some intern from delphix will give you more information Regards, Mouhssine