Essential ITIL: What You Need to Succeed
ITIL is about process. There are different approaches to process implementation based on which "Version" of ITIL one is inclined to adopt. But without debating the merits of ITIL "Versions," let's presume that any ITIL implementation discussion ultimately has roots in the principle of Process Improvement. Besides, ITIL v2 and v3 are more alike than different at a fundamental level. Both embody essential ITSM processes that every IT organization must perform to the best of its ability - one is doing them as a matter of course whether one has efficient processes in place, or not.