UniFi Cloud Access provides a single dashboard for connecting to multiple UniFi Controllers. If you have done dozens of UniFi deployments, then you probably have lots of Cloud Keys and UniFi Controller servers at different locations for managing your UniFi devices. With Cloud Access you are able to connect to each of them quickly without having to remember VPN credentials or making a site visit.
If you have many UniFi Controllers to manage, Cloud Access can help, but why not migrate all of those sites to a single cloud server? At HostiFi, our primary customers are IT service providers and businesses who are migrating multiple local UniFi controller installations to our single cloud server deployment. With only one UniFi server managing all of your sites, you won’t have any need for the Cloud Access dashboard.