Alan has been using Scrum since 1996 when, as an active member of the patterns community and with a special interest in organizational patterns, he saw Scrum presented as a pattern language at the 1996 OOPSLA convention. A Certified Scrum Product Owner (CSPO) and Certified Scrum Professional (CSP) with Scrum Alliance, he is also a Professional Scrum Master (PSM) with scrum.org, a PMI Certified Agile Practitioner (PMI-ACP) and a SAFe (Scaled Agile Framework) Program Consultant. As Principal Product Owner of Emerald Hill Limited, Alan consults and/or acts as Scrum Coach for major corporations, government departments and NGOs world-wide, as well as for start-ups and small and medium-sized enterprises. He has worked with Learning Tree International as an instructor and course author for eighteen years, and is currently Curriculum Architect for Learning Tree’s Software Engineering and Agile courses.