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What is Iaas, SaaS, and PaaS?

In the cloud, you have many different options, from a single application to a platform of premade solutions or a bare infrastructure of the technologies. Here is a list of the major ones and what they mean:

IaaS iaas, infrastructure as a service, cloud, service in the cloud, aws, azure

From the bottom up, Infrastructure as a Service (IaaS) delivers a computing infrastructure in a virtualized environment. These infrastructure resources include virtual compute and storage resources, bandwidth, network connections and more. IaaS can scale up and down as demand changes and also provide redundancy configurations to ensure high availability. The bigger cloud providers offer a high degree of software automation.

The cloud provider maintains the servers and networks in the data centers, assuming responsibility for all physical equipment. Security is a joint responsibility with the Shared Responsibility Model. The customer’s IT is responsible for configuration and maintenance of the guest operating systems, related applications, and resources. As companies embrace different cloud infrastructure models, IT may have to integrate public, private, multi-provider and on-premise environments.


PaaS paas, platform as a service, aws, cloud, azure, certified

Platform as a Service (PaaS) expands on the capabilities of the SaaS model by not only delivering software but also providing the platform for software development with databases, storage, web servers and operating systems. It is located in-between the SaaS and IaaS layers, supplying more than the bare infrastructure but not the full-fledged application. The PaaS layer provides developers with tools such as business process management, database, and integrations. With this platform, they can develop, run and manage their applications.

The lines are blurring between PaaS and IaaS as the big cloud providers such as AWS, Google and Azure integrate their cloud offerings. For businesses who are proficient in IaaS but want the agility and flexibility of PaaS, being able to utilize both layers is an advantage. Vendor lock-in can become an issue should a business decides to switch to another provider. Therefore, businesses must consider the applications’ business logic from the start to be able to re-build applications on another platform.


SaaS saas, software as a service, cloud, aws, azure, certified

Already in its twenties, Software as a Service (SaaS) may now be the only way that some software products are offered. With SaaS, the cloud service provider hosts the software and associated data and the user consumes the application on demand. Due to ease of entry, small companies now have the ability to use applications that were previously only available for larger businesses. As the mobile workforce continues to grow, SaaS helps to guarantee a similar experience for all users. On the downside, SaaS does not offer much in the way of customizing applications for specific user needs.

IT may be involved in determining which application is best suited to meet the technical requirements and how to integrate with the current environment. However, ongoing involvement is greatly reduced, as expertise is no longer required to the same degree to configure and manage applications, conduct software upgrades, install patches, and integrate APIs.


If you are looking for a IaaS, PaaS or SaaS or solution, contact Triton Technologies and we can deliver you the best solution for your needs.

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