This is a simple diagram which shows what level of qualification will be achieved with the certifications that you have already done and what you want in the future.

Foundation Qualification Certifications
ITIL v2
ITIL v3
ISO/IEC 20000
Practitioner Qualification Certifications
ITIL Practitioner exams
ITIL V3 Lifecycle exams
ITIL V3 Capabilities exams
ITIL Expert
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