What Is IaaS?

What Is IaaS?

Infrastructure as a Service (IaaS) is one of the ‘layers’ in the Cloud Computing model; the three fundamental service models being:
 

Infrastructure as a Service (IaaS): hardware is provided by an external provider and managed for you

Platform as a Service (PaaS): in addition to hardware, your operating system layer is managed for you

Software as a Service (SaaS): further to the above, an application layer is provided and managed for you - you won't see or have to worry about the first two layers 

How it Works

The Cloud

As with all cloud computing services, it provides access to computing resource in a virtualised environment, “the Cloud”, across a public connection, usually the internet. With IaaS, however, the client is given access to virtualised components in order to build their own IT platforms.

Virtualised Hardware

The computing resource provided is specifically that of virtualised hardware, in other words, computing infrastructure. The definition includes such offerings as virtual server space, network connections, bandwidth, IP addresses and load balancers.

Cloud Servers

Physically, the pool of hardware resource is pulled from a multitude of servers and networks usually distributed across numerous data centres, all of which the cloud provider is responsible for maintaining. 

Examples of IaaS

INTERNAL BUSINESS NETWORKS

Utilising pooled server and networking resources in which a business can store data and run applications. Expanding businesses can scale their infrastructure in accordance with growth

CLOUD HOSTING

Hosting of websites on virtual servers which are founded upon pooled resources from underlying physical servers

VIRTUAL DATA CENTRE’S (VDC)

A virtualised network of interconnected virtual servers which can be used to offer enhanced cloud hosting capabilities, enterprise IT infrastructure or to integrate operations 

Benefits

IaaS can offer many benefits to enterprise customers to create cost effective and easily scalable IT solutions where the complexities and expenses of managing the underlying hardware are outsourced to the cloud provider.

There are particular benefits where the scale of operations fluctuates, or where a business is looking to expand, as they can tap into the cloud resource as and when they need it rather than purchase, install and integrate hardware themselves.

A typical Infrastructure as a Service offering can deliver the following features and benefits:

  • Scalability; resource is available as and when you it, therefore there are no delays in expanding capacity or any wastage of unused capability 

  • No hardware CAPEX; the underlying physical hardware supporting IaaS is set up and maintained by a cloud provider, saving you time and cost 

  • Utility style costing; the service can be accessed on demand and you only pay for the resource that you actually use

  • Location independence; the service can be accessed from anywhere using the internet, so long as the security protocol of the cloud lets it

  • Physical security of data centre location; services available through a public cloud, or private clouds hosted externally with the cloud provider

  • No single point of failure; the multitude of hardware resources means that should one aspect of the service fail the service will be unaffected

Interoute’s networked cloud is the infrastructure platform for 98% of all the IT services that UEFA provides... Interoute understands our events process and has an agile model to fit with the needs of the ICT systems we use...

DANIEL MARION - Head of ICT, UEFA

Related Links

Cloud Articles

What is Cloud Computing?

Cloud Computing describes a scenario whereby computing resource is delivered as a service over a network connection, usually the internet

What is Cloud Hosting?

Cloud hosting services provide hosting for websites on virtual servers which pull their computing resource from extensive underlying networks of physical web servers

What is a Private Cloud?

A private cloud is a particular model of cloud computing that involves a distinct and secure cloud based environment in which only the specified client can operate

What is a Public Cloud?

The public cloud model is where cloud services are provided in a virtualised environment, constructed using pooled shared physical resources, and accessible over a public network such as the internet

What is a Hybrid Cloud?

A hybrid cloud is an integrated cloud service utilising both private and public clouds to perform distinct functions within the same organisation

What are Cloud Servers?

When opting for cloud hosting, clients are renting virtual server space rather than renting or purchasing physical servers. They are often paid for by the hour depending on the capacity required at any particular time

What is IaaS?

Infrastructure as a Service (IaaS) is one of the three ‘layers’ in the Cloud Computing model, whereby hardware is provided by an external provider and managed for you

What is PaaS?

Platform as a Service is a category of cloud computing that provides a platform and environment to allow developers to build applications and services over the internet

What is SaaS?

In today's digital world, Software-as-a-Service (SaaS) generally refers to a new and alternative way of accessing software, as opposed to more traditional methods of access.

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