is now the latest trend in the IT services and IaaS (Infrastructure as a Service) is taking preference over the traditional infrastructure. IaaS relies on virtual machines while the traditional hosting requires physical machines.
The costs in tradition services are fixed. You project your requirements and buy infrastructure that you may or may not use. In IaaS, the costs can be adjusted per your business needs. Though you may plan in the cloud environment, you pay for what you use.
The provisioning of physical infrastructure is a time-consuming process and in case growth as projected does not materialize, it may result in wastage while in IaaS the services can be accessed on demand and does not take long to acquire.
In traditional infrastructure, the components are bought and installed individually that creates a lot of chaos and complications in management. In the cloud environment, the virtual machines installation and acquisition is all included with the virtual machines
Traditional infrastructure involves dedicated resources, that may often end up being left underutilized while the cloud is more flexible allowing you to add or reduce your requirements.