With the increased popularity of cloud computing and services, businesses across the globe are moving away from the traditional on-premise services that they have come to rely on.
Cloud-based services have transformed how businesses have worked, allowing them to use IT infrastructures, platforms, software and applications via the Internet and online hotspots.
For organisations who are considering moving their ecommerce business to the cloud, there are three important terms to be aware of:
IaaS, PaaS and SaaS are the three main types of cloud computing available today.
These platforms have grown significantly over the last decade, with its worldwide revenue increasing from around $90 billion in 2016 to more than $312 billion in 2020.
With growth like this, cloud computing is quickly becoming the norm as businesses begin to phase out on-premise software altogether.
Not so long ago, most of a company’s IT systems were on-premises and clouds were just white fluffy things in the sky. Now, everyone can utilise cloud-based platforms for nearly all your systems and processes.
SaaS, PaaS and IaaS present three modern but different ways to describe how you can use the cloud for your business.
It is important to remember that most businesses using cloud-based platforms use a combination of SaaS and IaaS cloud computing service models, and many engage developers to create applications using PaaS, too.
SaaS platforms involve software that is available via third-party over the Internet.
Examples of popular SaaS providers include:
PaaS focuses primarily on hardware and software tools available over the internet.
Examples of popular PaaS providers include:
IaaS works primarily with cloud-based and pay-as-you-go services such as storage, networking and virtualization.
Examples of popular IaaS providers include:
IaaS, also known as cloud infrastructure services, provides end users with cloud-based alternatives to on-premise, physical infrastructure, allowing businesses to purchase resources on-demand instead of the more costly venture of having to buy and manage hardware.
IaaS is scalable and offers businesses greater flexibility than on-premise solutions through the cloud. IaaS businesses typically provide services such as pay-as-you-go storage, networking and virtualization.
IaaS cloud servers are typically offered to businesses over the internet, whether through a dashboard or an API, ensuring users have complete control over their computing infrastructure.
IaaS platforms are:
Maintaining on-premise IT infrastructure can be costly and labour-intensive as it often requires a significant initial investment in physical hardware. You will also probably need to engage skilled external IT contractors to maintain the hardware and keep everything working and up-to-date.
With IaaS, you can buy what you need, as you need it, and purchase more as your business grows.
IaaS solutions are highly flexible and scalable and can be replaced whenever needed without losing money on your initial investment.
Another advantage of IaaS is it puts control over the infrastructure back in your hands. You will no longer need to place trust in an external IT contractor — you can access and oversee IaaS products yourself if you wish, without being an IT wiz.
There are certain limitations and concerns when it comes to transitioning to IaaS, including:
IaaS is beneficial to businesses of all shapes and sizes. It allows complete control over your infrastructure and operates on a pay-as-you-use model, which fits into most budgets.
With most IaaS platforms, you get access to ongoing support and have the option of scaling up your requirements at any time.
Utilizing IaaS is an excellent way to future-proof your business.
A good example of IaaS is AWS EC2.
EC2 delivers scalable infrastructure for companies that want to host cloud-based applications. EC2 users do not own the physical servers — AWS provides virtual servers.
Users only pay for the usage of the servers, saving them the cost — and associated ongoing maintenance — of investing in physical hardware.
Adobe Commerce (Magento) can be used either on-premise or IaaS, depending on how the merchant chooses to host their store.
In the case of IaaS, the merchant is paying Magento for the licensing of the software and then using a third-party vendor for the best web hosting such as Rackspace.
Merchants are able to pay for a hosting plan that meets their own needs without the cost of maintaining their own physical servers. The merchant is still responsible for installing and managing updates to their Magento software.
PaaS, also known as cloud platform services, provides developers with a framework, software and tools needed to build apps and software — all accessible through the internet.
Often seen as a scaled-down version of IaaS, PaaS gives its customers broader access to servers, storage and networking, all managed by a third-party provider.
PaaS delivery is comparable to SaaS methods, with the main difference being that customers are not able to access online software but an online platform.
PaaS provides that platform for software developers to create, allowing them to concentrate on the software itself instead of any external issues.
PaaS platforms are:
PaaS is primarily used by developers who are building software or applications.
A PaaS solution provides the platform for developers to create unique, customisable software meaning that developers don’t need to start from scratch when developing applications — saving them time and money on writing extensive code.
PaaS is a popular choice for businesses who want to create unique applications without spending a fortune or taking on all the responsibility. It’s similar to the difference between hiring a venue to put on a show vs. building one yourself to put on a show.
The venue stays the same, but what you create in that space is unique.
Like IaaS, there are certain drawbacks to using PaaS that companies should be aware of, including:
PaaS is often the most cost-effective and time-effective way for a developer to create a unique application.
PaaS allows the developer to focus on the creative side of app development as opposed to the menial tasks such as managing software updates or security patches. Instead, their time and brainpower can go into creating, testing and deploying the app.
A good example of PaaS is AWS Elastic Beanstalk.
Amazon Web Services (AWS) offers over 200 cloud computing services such as EC2, RDS, and S3. Most of these services can be used as IaaS, and most companies who use AWS will pick and choose the services they need.
However, managing multiple services can quickly become difficult and time-consuming for users.
That’s where AWS Elastic Beanstalk comes in. It works as another layer on top of the infrastructure services and automatically handles the details of capacity provisioning, load balancing, scalability, and application health monitoring.
Adobe Commerce (Magento) is the most common example of PaaS for ecommerce. It enables the merchant to bundle their hosting as part of their package with Magento.
Merchants evaluating Magento go through a scoping process to determine their hosting needs, bundled into their monthly plan. You will have full access to edit the source code of their Magento store and can fully customise the application.
Any platform updates, security patches and general maintenance to their store would be the merchant's responsibility.
SaaS, also known as cloud application services, is the most commonly used service within the cloud market. SaaS platforms make software available to users over the internet, usually for a monthly subscription fee.
They are typically ready-to-use and run from a users’ web browser, which allows businesses to skip any additional downloads or application installations.
SaaS is delivered through the internet as a full functional service, accessible via any web browser. With SaaS, vendors manage the data, servers and storage, ultimately eliminating the need for IT review and streamlining business processes.
SaaS platforms are:
With SaaS, you don’t need to install and run software applications on your computer. Everything is available over the internet when you log in to your account online. You can usually access the software from any device, anytime — as long as there is an internet connection.
The same goes for anyone else using the software. All your staff will have personalized logins suitable to their access level. You no longer need to engage an IT specialist to download the software onto multiple computers throughout your office or worry about keeping up-to-date software on every computer. It’s all taken care of in the Cloud.
Another key advantage is the payment structure.
Most SaaS providers operate a subscription model with a fixed, inclusive monthly account fee. You know precisely how much the software will cost and can budget accordingly without worrying about hidden surprises.
Subscriptions can potentially include maintenance, compliance and security services. SaaS providers also offer out-of-the-box, simple solutions to set up if you need a basic package, with more complex solutions for larger organisations. You could have the basic software up and running within a matter of hours – and you’ll have access to customer service and support along the way.
Like IaaS and PaaS, there are limitations and concerns about SaaS, including:
SaaS platforms are ideal for when you want an application to run smoothly and reliably with minimal input from you.
Take your email server, for example.
You want to know that you can continue to send and receive emails without needing to fiddle with your email settings or worry about updates. Imagine if your email server went under because you forgot to update it? That’s simply not an option in today’s marketplace.
If you use SaaS applications to run your email inbox, the chances of something going wrong are very small, and if something did go wrong, it would be up to the SaaS provider to find a solution.
You’re not only paying for the SaaS applications/products — you’re paying for peace of mind.
Google Workspace — formerly known as Google G Suite — is one of the most popular SaaS-based infrastructure services. The upgrade from G Suite came as a result of a more integrated experience across Google’s broader suite, which allowed its customers to better connect with their various tools.
The Google Workspace suite features applications people are aware of, such as Gmail, Google Calendar, Google Docs and more.
An excellent example of a SaaS ecommerce platform is BigCommerce.
BigCommerce is one of the leading SaaS ecommerce platforms for mid-market and enterprise brands. It has all the benefits associated with multi-tenant SaaS — ease of use, high-performance, and continuous updates — coupled with platform-wide APIs that enable businesses to customise their sites and integrate with external applications and services.
BigCommerce provides complete shopping cart software and hosting infrastructure to the user, allowing businesses to create an online shop within minutes without worrying about coding, hosting or software.
The BigCommerce platform also has regular updates that automatically roll out for users, and software licenses, upgrades, and hosting costs are all covered in the monthly subscription fee.
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Ultimately, what are the differences between IaaS, PaaS, and SaaS?
The increasing popularity of IaaS, PaaS, and SaaS has reduced the need for on-premise hosting. As businesses and technology continue to merge, migrating to the cloud becomes paramount for organisations looking to remain on the cutting edge.
These cloud delivery models give users choices, flexibility and options that on-premise hosting simply cannot provide.
The answer is dependent on your business. Each cloud service model offers different features and functionalities.
If you want out-of-the-box features, without the hassle of installations, then SaaS may be the best option for you.
If you need a platform designed for building software products, then PaaS would help your business immediately.
If you are looking for a highly flexible, scalable service — while maintaining control of its infrastructure — then IaaS is the right choice for you.
The most significant difference between PaaS and SaaS is that SaaS products are fully managed by another company, from the servers to the data itself. With PaaS, you are able to use the cloud-based platform as a foundation for building software.
If you want to create your own applications for your business, then PaaS platforms are the best option.
The greatest difference between IaaS and PaaS comes from who controls the system.
With IaaS, administrators gain more direct control over operating systems. On the other hand, users gain greater flexibility and control over proprietary applications or programs with PaaS.
With both IaaS and SaaS, the cloud service providers manage servers, networking, virtualization and storage.
However, unlike SaaS, those who use IaaS are still responsible for managing some aspects of their business, including applications, runtime, middleware and data. SaaS is the more out-of-the-box option, while IaaS maintains a small level of control.