Website Development and Website Promotion Centum-D IaaS, PaaS, or SaaS? Getting Clear about Cloud Computing

IaaS, PaaS, or SaaS? Getting Clear about Cloud Computing

Cloud servers are now at the peak of their popularity. They have completely changed the way modern business is done, and today many companies have already moved their business activities to the Internet, taking the most out of cloud servers and cloud computing. There are many reasons for this, but the critical fact they all share is the ability to expand your business. Cloud computing comes in various technology stacks, allowing companies to choose what fits their budget and capabilities; the key is to know what options are best for you. This article will discuss PaaS vs. IaaS vs. SaaS, their main characteristics, advantages, and disadvantages. 

What is cloud computing, and why will it benefit your business? 

paas vs iaas vs saas

Cloud computing is an umbrella term for providing hosted services on the Internet. There are basic categories of services, such as PaaS vs. Iaas vs. SaaS, and to decide which type of cloud is right for you, you should become well acquainted with these terms. But first, let’s break down why cloud computing is profitable for businesses.


It used to be impossible to scale the internet environment of your business because companies were compressed within fixed sizes and insufficient hardware capacity. But now, with the cloud, scaling your business is possible and can be done quickly and easily. 


Using the cloud positively impacts all aspects of your business; they help increase productivity and flexibility and reduce costs. Cloud computing makes it easy for companies to experiment and innovate their business; you can be sure you won’t run into performance issues.

Economic efficiency

Moving your business to the cloud may require investment, but supporting this service will cost you many times less than other IT services. The cost calculation will depend on which type of cloud model you choose.

Easy IT Infrastructure Management 

Very often, companies are faced with a lack of resources for research and development of new solutions because, on top of that, they need to manage and protect the IT infrastructure of their business. At the same time, cloud service providers themselves ensure the security of their infrastructure and its management, and therefore the company has more time and opportunities to focus on other areas of their business. 

Multiplicity of service offerings 

Cloud computing offers several deployment types: public, private, and hybrid. The public cloud is delivered by a third-party provider over the Internet. Private – delivered from a company’s data center to internal users. And hybrid combines the quality of a public and personal type of deployment. Most companies choose the hybrid kind of cloud deployment. 

In addition, as mentioned, there are three main cloud computing models. Below we will briefly summarize IaaS PaaS SaaS definition and highlight their main characteristics and examples. 

The critical difference between PaaS vs. IaaS vs. SaaS

types of cloud computing

The key difference between all the proposed cloud computing options is that each has a different level of control. 

Accordingly, in different use cases, your company will have different levels of responsibility. So, with IaaS, you have complete control over all the processes. With PaaS, you are only responsible for managing the applications and data, and with SaaS, the service provider is in charge, and you can only change some configurations.

Infrastructure as a service – what is it? The main characteristics are

Starting with what does IaaS stand for – it’s a cloud computing service that provides services on demand and takes a pay-as-you-use basis. It means you only pay for what you need, rather than buying the whole package at once and only using a few tools.

Even though the cloud provides you with storage, disks, IP addresses, and more, you’re still responsible for managing the infrastructure and have all the settings and APIs to do so. IaaS is suitable because it gives you more flexibility and choice; just decide what features you need and scale them. 

Infrastructure as a service examples includes Amazon Web Services (AWS), Microsoft Azure, Google Compute Engine (GCE), and others. All of them have the following advantages in common: 

  • Speed – cloud service is handy in terms of scalability. The provider can provide you with different hardware configurations with the OS already configured. The service also allows for fast resource allocation
  • Economical – The pricing policy of such cloud services is very favorable because you only pay for what you use. If you stop the virtual machine, the billing is also stopped 
  • Simplified management – unlike on-premises infrastructure, you can manage your environment with almost no help from additional staff 

Nevertheless, like any service, IaaS has its drawbacks, such as: 

  • Security risk-the providers may offer the same infrastructure to multiple customers, which can cause your business to have security problems
  • The provider controls the infrastructure – so if something goes wrong in their infrastructure, this can also affect the customer’s infrastructure
  • Legacy systems – when you migrate to the cloud, you have to make sure your existing IT systems are compatible with the cloud; sometimes, it happens that your tools will have to be upgraded or replaced altogether 

When is IaaS the best fit? 


The IaaS cloud service type is suitable for companies of all sizes and budgets of all sizes because it is very flexible and gives you complete control over management. You don’t depend on the provider’s decision, the size, or capacity of the system, and you can scale whenever you want. It’s also logical to assume that this type of cloud computing is only suitable for companies with the technical expertise to build an application. 

Platform as a Service – What is it? Key Characteristics

Moving on to the next computing model, we will define what does PaaS stand for. So Platform as a Service offers your business a framework for creating and deploying applications. 

That way, the whole technical part of the application has already been preconfigured, and you’re left to focus on the creative aspect of building the application. You don’t have to worry about updates, OS installation, storage, infrastructure, etc. This way, developers can get their applications up and running faster and efficiently manage them. 

The best-known PaaS solutions include AWS Elastic Beanstalk, Red Hat OpenShift, and Google App Engine. The main advantages of such solutions are: 

  • Quick time to market – PaaS comes with “building blocks” already in place in the form of a repository, storage, email, authentication, search service, etc. At this time, developers focus on building the application and don’t waste time managing virtual machines, networks, etc.
  • It doesn’t require many skills -It’s rare to see standardization of development tools in IT today, and it takes a lot of time and resources to learn how to use them or find the right specialist. However, since the PaaS solution offers these complex components out of the box, you save on both
  • Scalability and Customization -PaaS allows you to create a unique application without taking on much responsibility or spending much on overhead. You can also quickly scale your application as your business grows and change the underlying virtual machine instance type 

Speaking of the disadvantages of the platform as a service, the following can be highlighted: 

  • Runtime -PaaS platforms are not always optimized for the language and platform you need, and finding an adapted and appropriate solution for your business can be difficult
  • Not a fixed range of services – each provider’s list of services is different, so you need to spend some time to find the right provider for you
  • Operational limitations – it may be that individual cloud operational solutions may not be compatible with PaaS solutions, which can limit the breadth of your business

When is PaaS the best fit? 


PaaS is excellent for those who want to spend a minimum of time developing and deploying their application. If controlling the technical side of your application is not crucial to you but rather focusing on its interface, design, and primary purpose (what your application will serve), then a PaaS solution is right for you. 

What is Software as a Service? Key Features 

SaaS is a software deployment model available to you through a web browser. For the user of SaaS, it doesn’t matter where it’s hosted or what programming language and OS it uses. This cloud computing model is accessible from any device; you don’t invest your resources, time, or capital in it; you only subscribe and connect to the application.

The primary SaaS examples in cloud computing are Microsoft Office 365, Intuit, Salesforce CRM, and Zoom. Among them, we can highlight the following list of advantages: 

  • Easy to use – the application is accessible from any device; you don’t need to download it to a local machine, and it’s always available online
  • Payment structure – most SaaS providers offer flat rates, so it’s easier for you to plan your budget knowing exactly how much you’ll pay for the service
  • Save resources – you don’t have to pay for the hardware on which the application runs, and you don’t have to cram in licensing fees and maintenance wastage. You are closely connected to your vendor, so you can always count on support in case of problems 

But as with anything, SaaS has its drawbacks, namely:

  • Data security – The data from SaaS platforms reside on remote servers, so the security risk remains high. You must carefully choose a SaaS application provider that provides its product with security certificates and other advanced security measures
  • Limited customization – There is little you can change when you purchase a SaaS application. Only minimal customization and integration are available to you
  • Lack of control – All control of updates, functionality, speed, and performance resides with the vendor. So you must ensure that your supplier provides the right conditions for your needs.

When is SaaS the best fit? 


The SaaS application will be your ideal option if you want a minimum liability and a seamless application. The provider handles all the technical aspects, and you just pay in the meantime – that’s all you have to do. If you don’t have the knowledge and experience in IT development, SaaS is your solution; it’s suitable for companies of all sizes and industries. 


In summary, SaaS and PaaS offer services with different levels of access and responsibility. To understand which cloud provisioning model suits you, you must first understand how responsible you want to be for your application. Do you have the resources, staff, and time to do so? How much work are you willing to do yourself, and how much to trust your vendor? You can only determine which cloud computing option is right for you through your unique situation.

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