Marc Welters is chairman of NOREA (the professional association of all IT auditors registered in the Netherlands). In addition, he has been a partner at EY for 20 years, a member of the curatorium post-master IT auditing at TIAS Business School, lecturer IT audit at the post-master IT auditing of the Erasmus School of Accounting & Auditing, and guest lecturer IT governance at the commissioner training courses of Nyenrode, UMIO and TIAS.