IaaS is often deployed on-demand in small increments (cores, RAM, storage, network) with billing occurring in small increments of time. Instead of spending the capital (CAPEX) for a large four or eight-core server (which is the smallest currently available from some manufacturers), a right-sized virtual server can be acquired and deployed as a service, matching infrastructure size to cost and immediate need. This flexibility allows for infrastructure to be quickly matched to business strategies and economic constraints.
IaaS can include many of the infrastructure components included in traditional deployments. Firewalls can be virtual or physical. Compute and storage can be deployed across many different styles and ...
