What is Infrastructure as a Service (IaaS)?

Infrastructure as a Service is one of the three basic models of the cloud computing technology.

This model is described as one of the most efficient among all three; since it facilitates an organization or client to use the operations, storage unit, servers, hardware, and networking components which are hosted and presented elsewhere.

IaaS model not only allows you to use the software and operations hosted elsewhere, it allows you to develop new programs, operations and software as well.

The service provider who provides you with all the storage facility, hardware and software requirements takes care of the entire unit which constitutes of housing, maintaining and running it.

Infrastructure as a Service has turned out to be the most effective, efficient (both technically and economically) and exuding high performance in the present day scenario. This is because the customer doesn’t need to bear the cost or the maintenance of the underlying hardware, networking components, servers or storage units.

IaaS is the perfect solution to Enterprises, small-scale or even large scale businesses where the overhead costs to maintain the underlying components would exceed the priorities that said business could invest in or withstand. Besides, the underlying components require skilled personnel to take care of them in case a complexity arises and the entire system is at stake.

This is why it is essential for such clients to outsource the underlying components to service providers who can take better care of them for a fraction of the cost. The customers, however, are given complete access to the necessary components so they can store, use and develop their own platforms upon the existing ones.

Infrastructure as a Service has grown popular because of the flexibility and ease of access it provides to the clients. With Infrastructure as a Service, you can access anything from anywhere without needing to carry along all that you need with you.

Some of the components and characteristics of Infrastructure as a Service include

Enterprise Infrastructure

A business requires more than space to store data and applications that are necessary for business purposes. An enterprise requires internal business networks, like virtual LAN and private clouds. All of these make use of pooled server and networking resources that the business body is going to use every day.

Businesses that are expanding can expand their infrastructure in terms of their growth whereas the private clouds which can only be accesses by that particular business organization can keep all the necessary data, information and applications confidential that are classified for that organization.

Dynamic scaling

Infrastructure as a Service model is dynamically scalable, this means it can be scaled up or scaled down according to the requirement of the arrangement. This helps improve the optimal utilization and flexibility of the resources and funds.

Reduces the total cost of Ownership

With Infrastructure as a Service, it is very easy to change the costs from Capex (Capital Expense) to Opex (Operational Expense) for any business.

Second, it is trouble-free for enterprises that are huge and have the money to invest in infrastructure or software, but for small and medium sized companies, the IaaS model helps save a lot thus helping them to channel the investment elsewhere.

Scope for innovation in IT

Since the Infrastructure as a Service model enables quick access to the necessary services, and cuts out the setup and maintenance expenses, there is always scope for further improvement and solutions.

It is understandable that a firm that doesn’t deal with the setup and maintenance of their own IT infrastructure as their core competence will have a hard time to assemble it.

Cloud Hosting

Most of the websites you find on the World Wide Web today are hosted on virtual servers which are based on pooled resources from components underneath.

A website that is hosted on the cloud infrastructure can benefit a lot from the redundancy that is provided because a rather large network of physical layers is present and the on-demand scalability that is necessary to cope with unanticipated demands about the website.


Resources are available when the client requires it. And so, there is no setback in maximizing the capacity or for the unused capacity to go in vain.

Independent of location

Cloud implements everything with the added advantage that all of the information and application can be accessed from anywhere, so the cloud system is independent of location.

The security protocol of the cloud is good enough to implement it.

Multiple Tenants

Infrastructure as a Service provides similar services with a little difference in the specific applications, size of storage and type of platform to more than one user.

Utility-style costing

Cloud system follows a pay-as-you-go scheme. So the client is liable to pay only what they use. So you, as the client can opt for it and use only what you need.

This is particularly beneficial for growing companies. Not only does it provide specific services to the one seeking for it, but gives enough scope and room to grow without caring about the cost of infrastructure and purchasing licenses of the software applications.

Security of datacenters

Services that are accessed via a public cloud; or the private clouds that are hosted externally by a cloud service provider, so the security of these datacenters is the responsibility of the service provider who maintains the hardware and networking components.

More effective way to handle the failure of a system

If one system fails, the rest of the system remains unaffected because of the backup hardware system. So there’s minimal risk of data loss in a cloud system.

This is one of the advantages to storing all the data and applications at a remote server rather than housing them under the same roof.

So, opting for an IaaS model is a much suitable way if you have started your business and need to cut down the costs for the hardware and applications necessary. This is a successfully executed and proven method for economic and effective management of the underlying components necessary to sustain a business.

Business Encyclopedia

Learn everything there is to know about running a business

Keep Learning

Here are some related guides and posts that you might enjoy next