Infrastructure as a service (IaaS) could be considered a sort of cloud computing model that provides virtualized computing resources to the user through the web. IaaS is one of the main models of cloud computing together with SaaS (Service as a Software) and PaaS (platform as a service). IaaS is totally provisioned and managed over the web.
Statista Stats insights:
” In 2018, revenues from the public cloud market are expected to reach a combined 258 billion U.S. dollars. That same year, revenue from the SaaS and related PaaS segment was expected to amount to 170 billion U.S. dollars. Cloud computing is a model for providing on-demand access to resources, whether they are networks, storage, applications, or services. For businesses, the benefits of cloud computing are cost savings and improved business agility and responsiveness.”
When we think of infrastructure as a service, it means the whole infrastructure is provided by the vendor. Infrastructure mainly consists of 3 things which are
- Computing mechanism which includes computing devices like microprocessor, GPU (graphic processing unit), and HPC (High-performance computing). Due to GPU, these services can be used to handle and compute AI-based applications as well.
- Storage is the second thing that includes infrastructure as any application or enterprise requires some storage to handle data. The storage is divided into three parts: objects, file, and blocks
- Networking is another important thing that must be included in infrastructure as any enterprise must need interaction with other applications on the internet. So, networking is also a part of the infrastructure.
So, in IaaS, the vendor provides you with the infrastructure of this kind.
The IaaS technology is used to help the users to avoid the complexity and capital cost of installing and managing their own physical servers. Each resource of IaaS is offered individually and also the users solely need to pay for what they need. The cloud service supplier manages the IaaS infrastructure whereas the users can concentrate on configuring, installing, and managing their package.
According to Statista:
“The statistic shows the market share held by the leading cloud Infrastructure as a Service (IaaS) vendors worldwide from 2015 to June 2018. In the year to June 2018, Amazon took in the greatest portion of Infrastructure as a Service revenue, controlling 19.2 percent of the IaaS market. Overall, the cloud computing market was valued at 199 billion U.S. dollars in that same year, with Infrastructure as a Service making up 56 billion U.S. dollars of that.”
As the buyers rent space within the virtual data center of the IaaS supplier, they get full access to the virtual data center through the net. IaaS provides the basic infrastructure for IT and ensures affordability because the users solely have to be compelled to pay the resources they use. The cloud service suppliers alter the users to rent the virtual servers and storage whereas forming networks so as to tie all along. When you rent from an IaaS vendor, you are actually renting hardware along with software automating it.
Companies using IaaS:
There are many small and big companies and enterprises in the world that are using IaaS services due to its productivity and benefits. Here, I have listed some of these companies
Things to consider before choosing IaaS services:
Following things must be considered before choosing any IaaS service
- Scalable: Any service you want to buy must be flexible and scalable. You can scale it up and down any time depending on needs.
- Control: You should consider how much control you have on infrastructure.
- Cost: you must consider maintenance costs and other expenses before signing up for any package.
- Vendor review: Before taking any IaaS service you must consider the rating of the vendor and must consider the reviews about the specific vendors. In this way, you would be able to analyze the performance and reliability of the vendor.
- User privacy: You must consider user privacy before purchasing service from any vendor
“This statistic displays cloud IT infrastructure revenue worldwide, from the fourth quarter of 2013 to the first quarter of 2020. In the latest quarter, revenues from cloud IT infrastructure reached 14.43 billion U.S. dollars. Public cloud infrastructure continues to expand and is a large driver of IT spending.”
Benefits of IaaS:
Here I have listed the few benefits of IaaS
Reliability: The on-demand service providing a model of IaaS makes it simple to migrate workloads from one IaaS instance to a different, making certain that resources are always there once you need them.
DevOps Support: Developer support is available 24/7 to manage the infrastructure in case of any problem.
Scalable: Most of the IaaS services are easily scalable. You can scale up and scale down your infrastructure at any time according to your need.
Pay Peruse: as most of the IaaS services are available as pay peruse. You pay for only those you use so its very cost-efficient.
IT Staff reduction: As most of the infrastructure is installed and managed by the vendor so there is less need for IT staff. So, most of the IT staff focus on work rather than spending time on infrastructure.
configurable: As you have direct access to infrastructure, you can easily configure it according to your needs at any time.
Unaffected service: If your hardware got damaged due to any situation, you are temporarily shifted to another infrastructure providing you efficient service.
Stats based on Statista:
“This statistic shows global revenue from the cloud infrastructure services market from the first quarter of 2016 to the first quarter of 2020. The cloud infrastructure services market has experienced high levels of growth since 2016, with market revenues reaching 31 billion U.S. dollars in the first quarter of 2020.”
Disadvantage of IaaS:
Apart from the advantages, it has some serious disadvantages which we must consider. Here I have listed some of the flaws of IaaS
giving the control of your data to a third party (Cloud) can prove worst for your sensitive company data. In an IaaS environment, companies rely mostly on cloud security. Even if there is a hack or any other vulnerability that doesn’t directly impact your data, a compromised security system always threatens your operations as well.
Sometime you might face downtime with these services that are not in your control. whereas most cloud services divide the workload and data across a broader IaaS surrounding, any issue that arises on the provider’s end may limit your access to the applications and information it leans on to urge work done.
Sometimes private policy provided by these services is worst and doesn’t meet the user requirements.
However, it reduces the need for IT staff but you give all control of your data to a third party (vendor) which makes you over-dependent on the vendor.
When to use IaaS:
Now, you know exactly what IaaS is and what are the advantages and disadvantages of the service and we can easily decide where to avail that service or not. Here, I have enlisted in some situations where we can use such services
- You can use IaaS when you don’t afford infrastructure but you require a lot of control over infrastructure for work
- If your company’s demand is unstable and infrastructure needs to be a scale at any time
- If your enterprise is small and you don’t have enough budget for infrastructure than you can use IaaS services.