29 July 2010

Glossary O


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What is ITIL?
O is for....

Objective A future measurable achievement; usually in support of a more general aim or goal.
Occurrence The first stage in an Incident life-cycle when the loss of of service quality occurs.  Occurrence precedes Detection.
Office of Government Commerce The UK Government Department that incorporates the organisation previously known as CCTA.  OGC owns the copyright to the ITIL on behalf of the Crown.
Operational The lowest of the three levels of planning and delivery (Strategic, Tactical, Operational).  Involved with actual delivery and execution of the processes and procedures.
Operational / Production Acceptance The process of ensuring the readiness of operational support capabilities during the transition of a Change from the development to the live environment.  This may include ensuring that documentation and procedures are in place and that all Service Management elements such as capacity, service level and disaster recovery needs have been considered.
Operational Costs Sometimes referred to as Revenue or Running Costs, these are the costs resulting from the day-to-day running of an organisation, e.g. staff costs, hardware maintenance and electricity.  The value of the item purchased will diminish as it is used up e.g. consultancy.  Sometime operational costs are a variable cost (paper, consultancy assistance) and sometimes fixed (salaries).  For practical purposes in IT Accounting, operational costs can be considered as those charged to a single financial year, with no depreciation element.
Operational Level Agreement An internal document, owned by the Service Management Team, that defines the working relationship between different functional areas within an organisation.  The OLA sets out the responsibilities for the support and delivery of IT services to Customers.  Between a Service Desk and 2nd level support/software maintenance/network management it may be mainly concerned with the activities that must take place should a service fail.  In other circumstances, for example in support of Change Management, it is likely to describe various executive responsibilities and activities of the parties involved.  The terms of any OLA must support the qualitative and quantitative statements contained in the Service Charter, SLOs and SLAs.  There is a strong relationship between OLAs and procedures.
Operations Bridge The combination in one physical location of computer operations, network control (and sometimes the Help Desk or Service Desk).
Opportunity Cost The value of a benefit sacrificed in favour of an alternative course of action, i.e. the net revenue between that actually obtained and the maximum achievable from any of the possible uses of the relevant resources.  For example, there is an opportunity cost associated with using re-cycled paper.
Outsourcing Where functions previously performed by an organisation are supplied under contract from a third party.
Overheads The total of indirect materials, wages and expenses.
Ownership A general term, signifying principal responsibility, which can apply to any activity or event.  Incident Management will be 'owned' by the Process Owner.  The Incident itself will be 'owned' by the Service Desk and the failed CI may be 'owned' by the Customer.

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