IT Service Management (ITSM) - SaaS vs. PaaS vs. IaaS

Posted by Rob Swingle  I  September 10, 12

Cloud, clouder, and cloudest... Service providers, like HP, are really starting to market their cloud services more agressively, as communication bandwidth and load balancing architectures have advanced to the point where they can host more, users can work faster over the WAN, and service owners can rely on the cloud-base services to meet uptime SLA's. As recently as two years ago, this was not possible.

I do my best to try to at least keep up with the trending products and services that can add true value to the common user. The cloud concept of "[X] as a Service" seems to be one of those things worth following.

In the last six months, inside of Techport Thirteen, we have been working hard to understand the "as a Service" world, especially as it relates to the IT Service Management Tools Industry. If you missed our recent article on HP's Software as a Service (SaaS) offering, you should definitely read it as background knowledge.

We have also started to dig more in to the following offerings:

  • Platform as a Service (PaaS)
  • Infrastructure as a Service (IaaS)

The best explanation we have found of the difference between SaaS, PaaS and IaaS is the following diagram (found by Dedra Cenciarelli, Techport Thirteen, Senior Service Consultant, HP Projects):

Service Layers Definition

As a next step, we are now learning about sub-offerings within these parent offerings:

  • Integration Platform as a Service (iPaaS)
  • Application Platform as a Service (aPaaS)

Ben Vargas, Director of Delivery for our HP Projects Division, came across an excellent article that breaks most of these concepts down. Here are some highlights:

  • Infrastructure as a Service (IaaS): A virtualized environment on which systems can be deployed. This provides the underlying computing resources for the deployment of enterprise systems.
  • Platform as a Service (PaaS): Application infrastructure, both for the development of single applications and integration between multiple applications. The middleware that enables the development of advanced applications.
  • Software as a Service (SaaS): Application software. This provides the user-facing applications that enable business.
  • Integration Platform as a Service (iPaaS): iPaaS is the next generation integration platform for integrating cloud applications with one another and with on-premise and legacy applications.

I encourage you to read the article in full, as we at Techport expect to work more with cloud service providers in the future.

I asked Ben his thoughts on how this will effect the ITSM application services industry, and he thinks, "...that the SaaS, IaaS and PaaS concepts will appeal to specific clients, while others will still prefer to host and manage their own architecture, especially those with strict security requirements (financial institutions, healthcare firms, etc.). A client would need to have one of the major cloud offerings in place before moving on to the more specific iPaaS and aPaaS concepts. There is definitely a business market for cloud service offerings, but there will always be room for cloud and non-cloud offerings to coexist in the market."

Interested in learning how cloud offerings could be applied to your firm's ITM tool environment? Call or click us today.


Tags:  xMatters, HP Service Manager, ServiceNow