Yes, there is a difference.
myEdsion®
myEdison® student portal provides that provides students access to courses in the Moodle learning management system, Online Student Services, Google docs, the University Help Desk and other student resources.
Online Student Services
Online Student Services is where students register and pay for a course or a TECEP®, drop courses, view their schedule and final course grades, update their address, phone number, or email address, view academic evaluation and accept financial aid awards.