In this article, Feathered Owl gives the lowdown on IT Service Management....
“I.T. Service Management”; “Business Service Management”; “ITIL”. It would be very surprising indeed if you haven’t encountered at least one of these terms in the last 12 months, or received a call from a salesperson trying to sell you an “ITIL-compliant” solution of some description. Maybe you’ve been tasked with “implementing ITIL processes” or adopting a more “service-centric” way of working in your team or department. But what does it all mean?
In the Beginning there was Technology - lots of it.
Up until a few years ago, IT was about technology. Designing, building, supporting, enhancing and everything else was all about making sure that the servers, networks, databases, data storage or any of the many components which made up IT infrastructures worked as well as possible. Datacentres were organised by technology “silo” and each area had its own people specialising in that particular technology. Monitoring, measurement and reporting and perhaps even service levels were all focussed on making sure that, for example, critical network links never went above 80% utilisation. Or that there was always enough storage space on the fileservers to cope with the amount of data being saved by users.
As well as all that infrastructure stuff there were applications (not that some people in datacentres seemed to notice). Usually, these were the responsibility of a completely separate group within the IT department from Infrastructure and the focus was entirely on requirements analysis, development of elegant code and functional testing to ensure that the code did what the requirements said. Once that was done the apps would be thrown over the fence to the Datacentre guys and the next interesting development project would begin. Everybody was happy. Well, almost….
Don’t forget the Users
As IT environments grew ever more complex and more and more money disappeared into them, the people who used the applications which ran on all that expensive infrastructure began to ask why they never seemed to perform properly or do precisely what was required to support the activities of the business in question. Or why, when new applications were released, something important like training the users in the new application always seemed to get overlooked.
At the top of the pile, business management started to complain to IT management that the systems just weren’t delivering to the required level, no matter how many charts they were shown of servers performing well below maximum CPU utilisation. In fact, exactly how much value were they getting for all that cash they were stumping up to fund the annual IT spend?
So what was wrong?
The problem was that, although all the component parts of IT may have been working fine in isolation, overall they were failing to provide the right services to the business users. In fact, for the most part, nobody in IT really knew what the right services were in the first place. As a rule, IT users don’t care about servers, databases or storage; what interests them are activities like sales, order processing, accounts, despatch and so on and the applications which they log on to and use to perform these business activities. Basically, IT was missing the point – effective management of technology silos alone was never going to deliver the right IT services to the users.
What’s IT Service Management?
IT Service Management (ITSM) was born out of the frustration of user departments with the quality of service they were getting from IT. As a recognisable discipline it originated in the late 1980s as a result of the Office of Government Commerce (OGC, formerly the Central Computer and Telecommunications Agency) in the UK being asked to do something to help the British public sector get better value from its IT investments. The result of this investigation was the IT Infrastructure Library (ITIL), a set of vendor- and technology-independent best practices and process guidelines based on received wisdom within the IT industry at large and, importantly, what was observed to work well by the OGC in the organisations it studied.
Then there was ITIL
ITIL was released into an unsuspecting IT industry in the early 1990’s. For several years not much was heard of it; this was, after all, the decade when everyone was busy getting rid of their mainframes, midrange computers and terminals and replacing them with cheaper, easier to implement and more agile distributed computing infrastructures made up of PCs and minicomputers talking to each other over IP networks.
In a way then, ITIL appeared at exactly the right moment, it’s just that nobody realised it at the time. By now we are all familiar with the headaches of managing complex distributed IT infrastructures and the applications they run to support IT services. Had it been adopted by the industry at large from the outset, ITIL could have saved everyone a whole lot of bother.
ITIL is published by the OGC as a set of manuals which give detailed information on a number of important IT practices down to the level of checklists, tasks, procedures and even roles and responsibilities. The areas covered by ITIL, divided into Service Support and Service Delivery are summarised in the following section. Unless you’ve been living under a stone for the past few years you’ll recognise at least some of them and appreciate that they encompass most of the things that should probably have been thought about at the same time as the rush to distributed computing was under way, in order to keep it all manageable to at least some degree.
Service Support Disciplines
Provides a central interface and point of contact between users and IT, handling incidents reported by users and requests for new services and acting as the interface into other processes as required.
Provides a means of restoring normal operation as quickly as possible following a service impacting outage, if necessary by effecting a temporary fix or workaround based on previous experience.
Seeks to identify the underlying root cause of incidents and to implement permanent fixes or changes to remove these and so prevent re-occurrence of the same or similar incidents
Manages the risk associated with changes to any part of the IT infrastructure to ensure that the desired outcome is achieved without adversely affecting the service in question or causing any unforeseen knock-on effects.
Considers everything that needs to be done to ensure that a major release (such as a new application rollout) in to the IT infrastructure is successful, including support staff and user training, documentation, operational handover, testing etc.
Seeks to manage the configuration and versions of all technology components, applications and other IT assets IT assets, providing a logical model of the IT infrastructure and the relationships between “configuration items”.
ITIL Service Delivery Disciplines
Service Level Management
Defines expected levels of IT service, documents these in service level agreements (SLAs) implements monitoring and reporting to measure achievement of these and seeks to “design in” the ability to meet SLAs from the outset of IT projects.
Does everything possible to ensure that IT services are available at the required times to the right people, including designing for resilience, monitoring and reporting service availability and process optimisation for availability.
Performs continuous monitoring, analysis and optimisation for production IT services to ensure continued delivery in line with SLAs, supports predeployment performance testing and optimisation and assesses the impact of changes on service performance.
Financial Management for I.T. Services
Provides guidelines for effective IT financial management including recovery of costs through usage-based charging.
I.T. Service Continuity Management
Seeks to ensure the continuity of service through effective backup and recovery, DR/failover solutions and processes to ensure that continuity of IT service provision is maintained and services can be recovered in the event of a disaster in line with contingency plans for business recovery
So what’s in it for me?
Having read the above list you’re probably thinking that this all makes perfect sense and is just what every organisation should be doing in order to manage its IT resources and services effectively. In practice, however, it can be difficult to do all this stuff well and every organisation has different specific requirements depending on its technology, people, processes and culture.
Where ITIL scores is in the fact that it doesn’t dictate a standard way of doing things using specific tools. Rather, it recommends best practices that are pragmatic and can be tailored to the requirements of virtually any organisation, large or small, which makes use of IT to go about its business. You can even leave bits out if they’re not relevant to you. Fantastic! It’s this flexibility and pragmatism (or put another way, a common sense approach) which has seen ITIL adopted the world over as the “industry standard” framework for managing IT as a service as opposed to a set of technology platforms.
Simply put, ITIL works. If someone had packaged it up and sold it they’d have made a fortune by now. Luckily, ITIL is in the public domain; for a few hundred pounds an organisation can buy the OGC manuals and off they go. An active ITSM community with its own representative body, the IT Service Management Foundation, constantly shares information and promotes the wider application and further development of the best practice guidelines which make up ITIL, and there are now recognised professional qualifications for individuals who are involved in application of these in their own organisations or provision of ITIL consultancy or related services. In many cases, an ITIL qualification or accreditation of some kind is becoming a requirement rather than a nice to have when looking for that next position in IT, the clearest evidence of all that IT Service Management is here to stay (for a while at least).