Benefits of IaaS
It is the most flexible cloud computing model in comparison to Paas and Saas.
There is no hard or fast rule that you have to purchase the resources. You can purchase it as per your need and requirement.
It is highly scalable like Pass and Saas.
The clients have full control over their infrastructure.
The resources are easily available
When to Use Iaas
For the startup companies Infrastructure as a Service(IaaS) is good. This will help them to eliminate the chance of spending money on purchasing the software and hardware. IaaS provides the flexibility and scalability for the startup companies The examples of IaaS are Microsoft Azure, Rackspace, Cisco Metacloud, Linode, Amazon Web Services (AWS), DigitalOcean, and Google Compute Engine (GCE).