PRINCE2 is a practical, process-based methodology which provides detailed, step-by-step guidance on delivering a successful project with transparent processes, steps, and templates.
ITIL Certs comes from the same stable as PRINCE2 Certs so, unsurprisingly, is also process-based. It aims to give you the ability to improve how IT is delivered and managed within an organization. Using ITIL, you can continually improve efficiency, effectiveness, quality and cost management. ITIL has traditionally been used for IT, but increasingly organizations are finding it can be utilized in a variety of settings for a variety of purposes. CERN - the location of the Large Hadron Collider - is using ITIL for non-IT situations as reported by Computer Weekly.