Valentini Konstantinidou successfully completed and received a passing grade in the MITx course 15.390.1x: Entrepreneurship 101: ¿Quién es tu cliente? as part of MIT's online learning initiative through edX. The certificate verifies that Valentini Konstantinidou achieved this accomplishment and lists the course name, issuing organization of MITx, and date of April 13, 2016.