itil certification ITIL Intermediate. ITIL certificates at the intermediate level are divided into two categories: service lifecycle modules and service capability modules. The intermediate level, therefore, represents the first point where ITIL practitioners can take divergent paths along the road to ITIL mastery.Based on their desired career path and personal growth trajectory, IT professionals can choose to take courses from either set of modules to bolster their ITIL qualifications. The service lifecycle modules are: Service strategy Service design Service transition Service operation Continual service improvement.