What is the difference between Infrastructure as a Service IaaS and software as a service SaaS TQ?

The continuous merging of business and technology has uplifted the popularity of IaaS and SaaS cloud computing models. These cloud solutions not only eliminate the need for on-premise hosting but also drops the requirement of an IT staff to address technical or software issues. Businesses that wish to remain on the cutting-edge rely on these models to offer their clients greater flexibility and options.

Niti Pawar  |  April 28, 2022

With numerous business ideas in mind and several services to offer via cloud technology, startups are emerging from all over the world to explore multiple cloud computing models. And now that cloud has become a hot topic, especially for entrepreneurs who wish to switch their base to the cloud, it is important to understand some basic yet major differences and advantages of these cloud models. Additionally, as per a detailed report published by Research Dive, the global retail cloud market is predicted to generate a revenue of $93,360.0 million and grow at a stable 21.4% CAGR during the 2020-2027 forecast timeframe.

Now that we know these cloud computing models are here to dominate the business world, let’s explore infrastructure-as-a-service (IaaS) and software-as-a-service (SaaS) models in this blog section.

Infrastructure-as-a-Service (IaaS)

Infrastructure-as-a-service cloud computing model is made of scalable and automated compute resources and is a full-service platform for accessing and monitoring storage, computers, networking, etc. IaaS solution provides resources to businesses as per the demand instead of purchasing the complete hardware.

IaaS offers cloud computing infrastructure like operating systems, servers, storage, and network via virtualization technology. The cloud servers are usually provided to the organizations via an API or a dashboard that allows them to monitor the complete infrastructure.

While IaaS providers are responsible for managing networking, hard drives, servers, virtualization, and storage, IaaS clients are responsible for managing OSes, applications, runtime, data, and middleware. Some renowned IaaS providers are AWS EC2, Google Compute Engine (GCE), Rackspace, and Microsoft Azure.

Since Microsoft has always been at the forefront of delivering digital tools and services for organizations, Westpac, an Australian bank and financial services provider, recently partnered with the IaaS provider to boost its digital and hybrid multi-cloud strategy and respond to customer needs immediately using Azure AI.

Software-as-a-Service (SaaS)

Software-as-a-Service cloud computing model offers the most widely used application services to businesses present in the cloud market. This solution utilizes the internet to provide applications to the clients, which are managed by a third-party vendor. Since most SaaS applications easily run on web browsers, they don’t need any installations or downloads from the customer side.

SaaS uses a web delivery model that eliminates the need for an IT staff and downloading of multiple applications on every computer. SaaS vendors manage all the technical issues like servers, data, middleware, and storage to offer complete support to the business.

Some leading SaaS providers are Google Workspace, Salesforce, Dropbox, BigCommerce, Zendesk, MailChimp, and Hubspot. Moreover, Apple recently announced its partnership with Google Workspace to make cloud identity management easier for organizations with the new Managed Apple ID that eliminates the need for an IT department.

How to Choose One for Your Business?

To sum it up, IaaS provides high flexibility in the case of hosting custom-built applications along with a general data center for data storage. Meanwhile, SaaS provides ready-to-use solutions as per a specific business’s need, like email or websites that are made available via third-party vendors.

If you are a startup company and need to launch your e-commerce quickly and don’t have much time for addressing software or server issues, you should consider adopting a SaaS model. Moreover, this cloud computing solution also offers you both web and mobile access. And if you wish to skip the tedious part of buying hardware and software, then IaaS is an ideal cloud solution for your business.

2020-06-30T18:45:00Z

Community Manager at PeerSpot (formerly IT Central Station)

What are the differences between IaaS, PaaS and SaaS? What are some considerations to take into account when choosing between PaaS, SaaS and IaaS?

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Businesses have finally understood the power of the cloud and how they can use the full potential of the cloud to manage their everyday business operations and processes. Cloud computing makes business operations more flexible by changing the way product are designed, produced and marketed. Cloud technology is not just a service but a set of approaches that can help businesses effectively and efficiently meet their computing needs in real time without worrying about the complexities. But with load of applications running on different cloud delivery models, it is necessary to understand which delivery model works best for you. That being said, we take a look at the two most common cloud service delivery models – Iaas and SaaS.

Infrastructure as a Service (IaaS) is usually the first step in organizational planning that encourages a move from the legacy on-premise systems to the cloud. IaaS is a type of cloud computing that offers and manages instant computing infrastructure over the internet. It simply allocates virtualized computing resources to the user meaning the user gets access to everything from hardware and software to computing power, storage, networking and other infrastructure components. The user, however, does not manage the cloud infrastructure but decides which operating systems run on it, the storage and the applications to be rolled out. IaaS promises centralization, automation and standardization that will simplify user experience and reduce costs. In IaaS, third-party cloud providers host servers, software, hardware, and other infrastructure facilities for the users. Businesses no longer have to purchase and manage their own equipment; in fact, the cloud provider handles everything by moving hardware and virtualization the cloud. Azure and AWS are two of the most powerful IaaS companies out there.

Software as a Service, also known as SaaS, is a software delivery model that allows users to connect to and use cloud-based applications over the Internet. Those applications are easily accessible through a simple interface, such as a web browser, as a service. In SaaS, third party software vendors take care of everything from maintenance of the software to maintenance of the data center, the backup and the support of the system. This is very different from the traditional on-premise service model, where the companies used to buy a perpetual license by paying a one-time fee but continue to paying a maintenance fee. Users had to buy a server, an operating system, a database license, and license to the CRM system. But with the current SaaS model, the software vendors take care of everything for you based on a subscription model where you get to pay only for the services you’re using.

Difference between IaaS and SaaS

Model 

– What IaaS is to infrastructure, SaaS is to software and applications. IaaS is about managing computing resources in the cloud – servers, hardware, software, networks and other infrastructure components, and everything is managed by the cloud providers. The user is only responsible for handling everything else, such as OS, middleware, data and application software. SaaS, on the other hand, is a software delivery model that allows users to connect to and use cloud-based applications over the Internet. In SaaS, the software vendors take care of everything for the users while the users consume the services that are provided based on a subscription based model.

Services 

– IaaS providers offer a range of services as pay-as-you-go and host resources on which the user builds the infrastructure. They provide all the infrastructure support such as storage requirements, networking resources, web and application servers, and other computing resources. IaaS providers simply rent infrastructure for the purpose of running applications. SaaS providers offer their services for a variety of business applications including billing/payroll management, CRM, email and collaboration, sales management, and more. These applications are easily accessible through a simple interface, such as a web browser or through an app.

Features 

– One of the most important key features of IaaS systems is that the services are offered on a subscription basis meaning users only have to pay for the resources that are being used. IaaS promises centralization, automation and standardization that will simplify user experience and reduce costs. And the users get access to GUI and API-based applications within the service provider’s infrastructure. With SaaS, users get access to a state-of-the-art facility without having to make a large investment. The software vendors take care of everything from maintenance of the software to maintenance of the data center, the backup and the support of the system.

Example

 – There are many examples of IaaS vendors and providers. Amazon Web Services (AWS) and Microsoft Azure are two of the most powerful IaaS companies that provide virtualized computing resources to the businesses around the world. Other IaaS companies are OpenStack, Rackspace, GoGrid, IBM, Savvis, and more. Examples of SaaS include Dropbox, Google Workspace, Salesforce, Cisco WebEx, Concur, Netflix, Shopify, Slack, etc.

IaaS vs. SaaS: Comparison Chart

In a nutshell, IaaS providers are responsible for managing the infrastructure aspects of the business such as operating systems, applications, runtime, middleware, storage and networking resources. All those infrastructure components are offered to the users as a service rather than a product. The SaaS vendors take care of everything software related, such as data, applications, middleware, servers and storage, while the users consume the services that are provided based on a subscription based model. While the economics of both the delivery models are different, the premise is basically the same because they rely on the same thing for their services – the cloud. Well, each model has its pros and cons, based on your need for customization and flexibility.

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