This document supports the methodology grounding for the development, implementation and maintenance of EN 16234 (all parts) e-Competence Framework (e-CF) - A common European Framework for ICT Professionals in all sectors which provides a common reference of 41 ICT professional competences as required and applied at the Information and Communication Technology (ICT) professional work environment, using a common language for competences, skills, knowledge and proficiency levels that can be understood across Europe. This document supports methodological understanding of the e-CF by all parties interested and supports Information and Communication Technology (ICT) stakeholders dealing with ICT Professional competences from multiple perspectives, in particular: ICT service, demand and supply organisations; ICT professionals, managers and human resource (HR) departments; educational institutions, learning program and certification providers of all types including Vocational and Educational Training (VET), Higher Education (HE) and Continuous Professional Development (CPD); social partners (trade unions and employer associations); professional associations, accreditation, validation and assessment bodies; market analysts and policy makers; other organisations and stakeholders in public and private sectors across Europe; and it seeks to particularly satisfy the needs of stakeholders from competence frameworks construction and research environment.