What is the Difference Between IaaS, PaaS, SaaS, and DaaS?

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IaaS, PaaS, SaaS, and DaaS are the models of cloud services. Cloud Services are the most affordable service as it can be accessed from anywhere through the internet. Also, these cloud computing services have a pay-to go, subscription model. 

Be it any cloud service, they are always more reliable and cheaper than the on-premise services. 

Let’s check out the difference between IaaS, PaaS, SaaS, and DaaS and you will eventually know which one is a good fit for you. 

IaaS (Infrastructure as a Service):

It is a cloud computing service that offers an on-demand service and pay-as-you-go subscription model. This model is made of highly scalable computing resources. 

In this type of service, customers can access networks, servers, data storage through the internet. 

IaaS Delivery:

These servers reach the organization through virtual technology. It means that it can be delivered to the companies through the API or a fully customizable dashboard. One of the advantages of IaaS over traditional service is that you don’t need to worry about its maintenance. 

Advantages of IaaS:

IaaS can be more advantageous for small businesses that cannot afford the hardware maintenance cost. IaaS servers are fast and scalable when compared to PaaS and DaaS. 

Also, you don’t need to pay for the complete service. You can pay for the hardware that you need. 

This model is perfect for the businesses that need servers or datacenters but cannot afford the hardware development costs. In fact, various organizations have now switched to the IaaS service. 

Examples of IaaS: Digital Ocean, Amazon Web Services, Google Compute, Microsoft Azure, Rackspace, and Linode. 

PaaS (Platform as a Service):

PaaS or Platform as a Service provides you the platform to run and manage the business application without needing to build the infrastructure system. Both the hardware and software are available on the internet. 

PaaS Delivery:

Similar to IaaS, PaaS is delivered via the internet. IaaS and PaaS have the same working models except that PaaS provides a platform for the creation of software or hardware rather than delivering the software. 

Advantages of PaaS:

PaaS gives you the environment to host and maintain the hardware at any stage of its development. Similar to IaaS, PaaS is also built through virtualization technology. 

It is usually beneficial for developers or companies planning to build software. 

However, if you need customizable hardware or software, then IaaS is the best choice.  

Examples of PaaS: Magento Cloud, AWS Elastic Beanstalk, Google App Engine, and Openshift. 

SaaS (Software as a Service):

SaaS is another cloud-based platform which is the most preferred choice for the businesses. This cloud service can be accessed from anywhere through the internet. They do not require any installation and can be run through the web browser. 

Most of the SaaS services are built on IaaS and PaaS platforms. 

SaaS provides a flexible pricing model for businesses. You can either pay monthly, yearly, or pay as you go subscription. 

SaaS Delivery:

Saas has the most flexible delivery model. It eliminates the need for installation or technical assistance for setup. In this model, vendors look after the servers, management, middleware, uptime, and downtime so that the clients can only focus on their business. 

Advantages of SaaS:

SaaS has a lot of advantages over IaaS and PaaS, but that might also depend on your needs. 

SaaS software service cuts the cost of maintaining the servers as well as the time required for its installation and setup. It can be accessed from anywhere and any device. The users need not worry about hardware and software updates. 

One of the major advantages of SaaS is its payment model. Everything right from the setup to installation and updates is managed by the vendors. 

Examples of SaaS: DropBox, GSuite, SalesForce, BigCommerce, Google Drive, and Hangouts.  

So, what is the difference between Saas & Paas?

SaaS is a fully managed service where the vendor manages everything from maintenance to data servers. PaaS provides a platform for building new products where you need to bear some cost of data servers and maintenance.

What is the Difference between IaaS & SaaS? 

IaaS provides a raw infrastructure for the building and maintenance of the software whereas SaaS is a completely manageable service. With IaaS, you can manage deployment, development, and maintenance. 

DaaS (Desktop as a Service):

Desktop as a service is another cloud computing service where hosts offer the clients a complete virtual desktop. 

It is a virtual desktop infrastructure that is managed by a third-party vendor. DaaS service provides all the backend services. It manages the storing and securing of the data for third-party. It is delivered as a cloud service along with the applications needed. 

DaaS is beneficial for small businesses that require cloud servers. However, when compared to IaaS and Paas, DaaS has less applications and thus it is not preferred by large corporations. 

Examples of DaaS include Urban Mapping, Citrix, and Xignite.  

The main difference between IaaS, PaaS, SaaS, and DaaS is the service they offer and the delivery method is almost the same. 

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