ITIL Basics — Cheat Sheet
Tags: itil, itsm, service-management, helpdesk, processes
Level: basic
TL;DR: ITIL is a widely accepted framework for IT Service Management (ITSM). It focuses on aligning IT services with the needs of the business.
Key concepts
ITIL stands for Information Technology Infrastructure Library.
It provides a set of best practices for delivering and managing IT services.
ITIL 4 focuses on the Service Value System and co-creating value with customers.
An Incident is an unplanned interruption or reduction in the quality of an IT service.
A Problem is a cause, or potential cause, of one or more incidents.
A Workaround reduces or eliminates the impact of an incident or problem.
A Known Error is a problem that has a documented root cause and a workaround.
Change Enablement maximizes the number of successful IT changes by assessing risks.
The Service Desk is the single point of contact between the service provider and users.
Service Level Agreements (SLAs) define the expected level of service between provider and customer.
Typical questions and ready answers
Q: What is the difference between an incident and a problem?
R: An incident is an unexpected disruption needing rapid resolution. A problem is the underlying root cause of incidents that requires deeper investigation.
Q: How do you handle a major incident?
R: I prioritize based on impact and urgency, apply a known workaround to restore service swiftly, and log all details for the problem management team.
Q: What is the purpose of the Service Desk?
R: It acts as the central hub for user communication, handling incidents, service requests, and providing initial triage.
Pitfalls and common mistakes
Treating ITIL as a strict set of rules rather than adaptable guidelines.
Closing a problem record simply because the immediate incident was bypassed with a workaround.
Neglecting stakeholder communication while focusing solely on technical troubleshooting.
Implementing too many ITIL processes at once instead of taking an iterative approach.
To review
[ ] ITIL 4 Service Value Chain activities.
[ ] The Four Dimensions of Service Management.
[ ] Incident prioritization matrices (Impact vs. Urgency).
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