After OGC putting forward ITIL in the mid-1980s,ITIL is supported by almost all big IT throughout the world as the international standard of IT service management in fact.As actively advocate of ITIL, IBM,HP,Microsoft and other famous international companies respectively introduced software and plan to implement IT service management based on ITIL.HLC will promote the usability,,reliability and safety through configuration management,change management,release management,incident management,issues management,service level management,finance management,continuity management,capacity management,availability management and other modules.
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