The supplied cloud proxy provides an OVA that contains the credentials and protocols needed to create a connection between a cloud account in VMware Cloud Assembly and an associated on-premises endpoint in vCenter.
vCenter-based cloud accounts require that a cloud proxy is deployed to a source vCenter for data collection and communication between the cloud account and an on-premises endpoint.
These cloud account types include vCenter Server, NSX-V, NSX-T, and VMware Cloud on AWS.
Amazon Web Services and Microsoft Azure cloud accounts do not require the cloud proxy.
To create a new cloud proxy, see Create and deploy a cloud proxy for a vCenter or NSX cloud account or Create and deploy a cloud proxy for a VMware Cloud on AWS cloud account.