SCALABILITY: One of the biggest complaints regarding Virtual Private Servers is that they aren't scalable enough. In contrast, a cloud's infrastructure is able to scale to or down according to the demand.
HIGH ARRIVABILITY: For most availability cloud is the best choice because of its failover security. With cloud, your virtual server will always be available. If a server is offline, Cloud VPS can share the workload of one server with other servers connected to the infrastructure.
Customized infrastructure: Although every decent provider can provide at minimum some kind of customization for their VPS servers, cloud servers are on an entirely different level. Pick from hundreds of OS and app templates, or design your own template. Choose the exact amount of storage you'd like and then create tiered storage setups that have several SANs per cloud.
They are different in many factors like (i) availability (ii) scalability (iii) Load balancing.Cloud VPS offers high availability - In traditional VPS, If the physical node fails, all the VPS's of that physical node went offline. When with Cloud VPS service, all the VPS are migrated to another cluster nodes without any service outage. Cloud VPS offers burstable computing resources - With traditional VPS, if any single VPS consume high resources, the performance of the entire physical server is affected.With cloud VPS hosting, there is no concern about lagging RAM or CPU power, even if another cloud customer's load grows. Cloud VPS are expensive than VPS- Cloud VPS’s are deployed on clustered infrastructure of multiple servers, whereas traditional VPS are deployed on the single physical server.