Taking the CSM Exam from Scrum Alliance versus PSM from Scrum.org

The Scrum Alliance was the first organization to offer a certification program around Scrum and their Certified Scrum Master (CSM) is the most well known and commonly found. Ken Schwaber were one of the original Scrum Alliance founders, but he left and formed a new group: Scrum.org who have introduced a competing certification called Professional Scrum Master (PSM) which offers compelling reasons to be considered as an alternative because it addresses many of the earlier criticisms of CSM. Here you find facts about the CSM exam and the PSM I, II and III exams.

Certified Scrum Master from Scrum Alliance

Professional Scrum Master from Scrum.org