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IaaS vs PaaS vs SaaS

By Priya PedamkarPriya Pedamkar

IaaS vs PaaS vs SaaS

Difference Between IaaS vs PaaS vs SaaS

Cloud Computing is divided into three types: SaaS, PaaS, IaaS. In terms of popularity, PaaS gains the most with 32 % in the year 2019 and expected to rise by 2020. SaaS gains the popularity of 27 % with IaaS with 12 %. With these clouds, computing is becoming the key to end businesses. These three cloud computing techniques explain the best way of using the cloud in businesses. Where SaaS is the software platform available through the third party via the internet. PaaS is a model where a third-party provides hardware and software tools over the internet. The same is for IaaS where it is a cloud computing service where a user is billed on a “pay per use” scheme for using services such as storage, networking, etc.

Head to Head Comparison between IaaS vs PaaS vs SaaS (Infographics)

Below are the top 9 differences between IaaS vs PaaS vs SaaS:

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IaaS-vs-PaaS-vs-SaaS-info

Key Differences between IaaS vs PaaS vs SaaS

Following are the key differences between IaaS vs PaaS vs SaaS:

SaaS (Known as Software as a Service) gives access to software and its functions. Here no need to invest in additional hardware, as the software is hosted remotely. SaaS reduces the hardware setup, installation, and maintenance. Also known as Storage as a service, provides storage space from third-party providers, and users utilize those space when data is been transferred from users to the service provider.

Features of SaaS

  • No manual installation of hardware is required as everything is virtually available on the internet once we log in. It consists of software applications that can be accessed by your personalized logins.
  • No need of any technical specialist for updating or upgrading the software applications. Cloud takes care of this.
  • The billed amount for the services takes for SaaS is based mostly on a fixed monthly fee. Thus it gives a clear estimation of Software and other subscriptions taken.
  • SaaS offers security and maintenance within the cost given to software applications.

PaaS (Known as a Platform as a service) provides hardware and software tools to develop applications over the internet. The PaaS cloud platform is mostly used by developers to design and develop software applications.

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Features of PaaS

  • PaaS provides a Web-based User interface that can accessible by multiple users.
  • It provides many features like developing applications with testing, hosting, and maintenance.
  • It is quite flexible, scalable, and portable.
  • PaaS cloud computing platform is quite portable as when the user needs more storage capacity, he can opt for a public cloud.
  • PaaS is quite secure as it provides the security of data, back up and recovery of lost data.
  • IaaS (Known as Infrastructure as a Service) uses the model of “pay per use” or “pay as you go” for storage, networking, and virtualization. The delivery of IaaS services is over the internet and users only pay for the services that are taken. In the IaaS model, users utilize the resources such as software, hardware, and storage space from third-party service providers and they also host user applications with maintenance. Here the consumer or user saves time and money.

Features of IaaS

  • IaaS services are highly scalable and flexible.
  • Here hardware is being configured by service providers which reduces high investments and time.
  • No waste of unused storage capacity and whenever more storage space needed, it gets in time.
  • There is no single point of failure as it means IaaS service still runs if there is any fault in the network, server or switch.
  • IaaS provides more security as its services are hosted externally.

IaaS vs PaaS vs SaaS Comparison Table

Let us look at the comparison table of IaaS vs PaaS vs SaaS.

Features

SaaS PaaS

IaaS

Full-Form Known as Software as an asset Known as Platform as an asset Known as Infrastructure as an asset
Services Offered It offers a pre-package, which a user needs to install in their system and use it. Offers work on the environment including software, the hardware on the internet. Offers Virtual machines, IP address to create a platform to test applications.
Usage Used among users of email, entertainment services. Used by mid-level developers to build their applications. Used by the skilled developer to develop unique applications.
Accessibility Accessible by multiple users. Accessible by multiple users. Accessible by multiple users.
Others Highly scalable to suit the small, mid, and enterprise-level business. Highly scalable to suit different businesses according to resources. Highly flexible & Scalable
Layers Importance Final layer or pre-package layer. Center layer of cloud computing model. Basic layer of cloud computing model.
Popularity SaaS has about a 27 % rise in the cloud computing model. PaaS has around 32% and expected to be the most important model IaaS has around a 12% increment.
Examples Salesforce, DropBox Heroku, Azure AWS EC2, Rackspace
Key Terms Client-Server Application Solution Stack Utility Computing, Multitenant computing

Conclusion

The cloud computing concept arises from the network diagram mentioning the internet as a cloud. The services offered by either of the cloud computing models (i.e. Platform as a service, Software as a service and Infrastructure as a service) are related to mobility and it depends on the quality of service and security provided by the service providers for user experience.

Choosing the best service delivery model, a user must know his business requirements. Every service model has its pros and cons, where SaaS uses packaged content as it does not have any control over maintenance issues and PaaS and IaaS are not suitable for all types of workloads. Cloud has been booming its presence for a few years where companies moved their IT infrastructures to a cloud platform. Cloud computing technology has several cloud products such as cloud storage namely public cloud, private cloud, and hybrid cloud. A recent move towards cloud computing solutions by various organizations depends on their needs only.

Recommended Articles

This is a guide to IaaS vs PaaS vs SaaS. Here we also discuss the IaaS vs PaaS vs SaaS key differences with infographics and a comparison table. You may also have a look at the following articles to learn more –

  1. IaaS vs PaaS
  2. Azure Paas vs Iaas
  3. Azure vs Google Cloud
  4. PAAS vs SAAS
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