Low resource utilization

The preceding problem can be partially solved by using the cloud platforms, which offer on-demand resource provisioning, but again public cloud vendors come up with a predefined set of VM configuration and not every application utilizes all allocated compute and memory.

In a common enterprise scenario every small application is deployed in a separate VM for isolation and security benefits. Further for ensuring scalability and availability identical VMs are created and traffic is balanced among them. If the application utilizes only 5-10% of the CPU's capacity, the IT infrastructure is heavily underutilized. Power and cooling needs for such systems are also high, which adds up to the costs. Few applications are used seasonally or by limited set of users, but still the servers have to be up and running. Another important drawback of VMs is that inside a VM OS and supporting services occupy more size than the application itself.