Infrastructure management is undergoing a transformation. ITIL can help manage conflicting demands like – “low cost but high service quality”, “ubiquitous access but enhanced security”?

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November 19, 2009

Introducing: Shaju Krishnan on ITSM tool SaaS implementation

Hello fellow blogosphere inhabitants. I would like to introduce Shaju Krishnan. He is an ITIL certified consultant with the process consulting group of Infosys. He has  around 10 years of experience, of which 5 years has been focussed on IT service management. He is kicking off his blogging adventure with a piece on the hot topic of SaaS: ''Configuring ITSM tools on a SaaS platform - A few facts'' whereby he will be sharing his experiences and learnings accumulated during the configuration of a SaaS ITSM tool for one of  his clients. Over to you Shaju… (Bruno Calver).

Article by: Shaju Krishnan

The Software as a Service (SaaS) model is a way of providing the same software or tool to different customers via a network, usually the Internet. In other words, the software or tool  is not hosted on the customers' individual computers. Under the SaaS model, a vendor is responsible for the creation, update, and maintenance of software. Customers pay a subscription to enable access to the service, which includes a separate license for each person that will use the software. The SaaS model can add efficiency and cost savings for both the vendor and the customer. Customers save time and money since they do not have to install and maintain programs. Drawbacks for the customer are that they do not control the software and customization of programs may be limited.

Implementation of an  an ITSM tool  in the SaaS  model  is rapidly growing due to the strong business case i.e Customers can expect higher system availability, increased user satisfaction and significant overall time and cost savings from improved system administration and management. However, I would like to bring some prons and cons to the table, which would benefit both vendors and customers in relation to the successful implementation of an ITSM tool like BMC Remedy , HP openview etc  in a SaaS environment from a vendor’s data center facility  via VPN or DS3 connectivity

  • Realistic performance SLA’s should  be agreed  upon considering  factors like load on the servers, no. of concurrent users, infrastructure capacity and the influence of network connectivity and latency
  • Each customer will want to have their company’s logo on the GUI, hence vendors should configure the system in such a way that each customer’s web interface  GUI has that particular customer’s logo.
  • For processes like change management, approval engines for approving a change will be different for each customer. Vendors  should understand  each and every customer's approval process and do the customization and configuration  accordingly  
  • If an update, customization or configuration is requested by a customer, it will most likely have a benefit or impact  to other customers who are also using the same software. The vendor should communicate and get alignment from all its customers before deploying the changes 
  •  For deploying the above mentioned changes, vendors should agree appropriate  change windows as Peak and off peak hours may vary for different domains. For example, the banking industry will have weekend and evenings as off-peak where as Saturdays and Sundays will be peak hours  for the gaming industry. Change windows should be selected in such a way that it is acceptable to all the customers  and does not impact their business during peak usage times
  • Infrastructure architecture diagrams and data segregation methods should be shared with all customers in order to provide a comfort feel to  the customers that their data is safe and secured 
  • Finally vendors should configure tools in such a way that it complies with all regulatory requirements  of all its customers. This can be a challenge as regulatory requirements may vary for each different domains.
  • Thankyou


     

November 4, 2009

An open letter to Enterprise Architecture from IT Service Management !!

Posted by Aswin Kumar

Dear Enterprise Architecture Group,
I am writing this letter to express my desire to work towards a closer and effective relationship between our groups. We can use the synergies to build a leaner and a better IT organization.
Let me put forward my viewpoint with respect to the references to Enterprise Architecture in the ITIL v3 framework.
ITIL always evolved towards adapting a common framework of practices that unite all areas of IT service provision towards a single vision – delivering value to the business.

If we look into the business goals of Enterprise Architecture (EA), it is also focused on the realization of value through logically organizing business processes with the IT infrastructure. In a tactical sense, EA teams are responsible for developing/maintaining Enterprise Data Model, System/Physical architecture diagrams, Technology standards, Future state architecture vision etc.
Taking a holistic perspective of both the worlds, Enterprise Architecture and IT Service Management both aim to achieve a living blueprint of services with the architecture and service assets underneath.


According to the Service Design book under ITILv3, Technology architecture is one of the five aspects of Service Design. Architecture requirements analysis is essential to ensure operational capability & maintainability of the new or changed service. It also recommends that Service Design needs to ensure that Architectures are flexible, concise, simple, integrated & aligned with all business strategies & needs. Furthermore, it suggests that Enterprise Architecture should be an integrated element of the Business Architecture and should include Service Architecture, Application Architecture, Data Architecture, IT infrastructure Architecture & Environmental Architecture.


I completely agree that all types of Architectures need to be maintained in the Service Knowledge Management system. Yes, SKMS can truly be combined to provide a top-down view to business ranging from highly generic to highly specific ones. The business architecture repository can add a feed of the unique service architectures available under SKMS that can further assist the Enterprise Architects focus on critical services with huge business value.
Similarly, there are multiple overlaps between the ITIL v3 and the Enterprise architecture guidance. There are organizations which have changed the Metamodel of their Configuration Management Systems (CMS) to include the missing data related to Enterprise Architecture requirements. Further, the CMS data feeds into the EA repository. Also, in some companies ITSM is managed by people called “Architects”. Innovation is on…
 

Having said all this, question is that do we want to take a next step towards exploring new areas of mutual collaboration?
Please let me know your feedback comments and do not hesitate to email me in case of any quick clarifications.


Thank you!
-          IT Service Management