<< Background >>Educational Data Analytics (EDA), that is, the use of educational data generated during teaching and learning (including assessment) for better supporting individual learners' in online and blended courses, became even more relevant during the emergency remote teaching forced by the COVID19 pandemic lockdown. As a result, Educational Data Literacy (EDL) competences for e-Learning professionals, as well as, school teachers and leaders, are highlighted as a key competence in the post COVID19 era.<< Objectives >>To produce and validate a comprehensive proposal for an Educational Data Literacy Competence Profile for e-Learning Professionals and Educators. To design, develop, offer and evaluate a competence-based Professional Development Massive Open Online Course (MOOC) leading to a Certificate of Achievement in Educational Data Literacy. To facilitate building a professional community around Educational Data Analytics with the participants and the graduates of the L2A MOOC.<< Implementation >>Researched, developed and validated the L2A Educational Data Literacy Competence Profile (L2A-EDL-CP). Designed, developed, promoted, offered, evaluated (all in 2 cycles), revised and re-offered the L2A MOOC, a professional competence development MOOC of 200 hours of study. Almost 5.000 people enrolled on the L2A MOOC and 521 successfully completed an L2A Certification of Achievement in EDL. Presented project to 24 academic conferences and 5 industry exhibitions (# 6.500 reached out)<< Results >>The L2A Educational Data Literacy Competence Profile, researched and validated by 210 experts [R2, 3, 4]The L2A MOOC & Certification implemented, offered and evaluated in 2 cycles [R5a&b, 6a&b, 7a&b, 8, 9, 10]A comprehensive MOOC evaluation strategy & a systematic, in-depth evaluation study for both versions of the L2A MOOC [R12a&b, R13, R14]2 open access books negotiated and agreed with Springer, 1 journal & 10 conference papers published,14 invited keynotes in international conferences