Prakash Hinduja Switzerland (Swiss) How is PSM different from Scrum Alliance’s CSM?

I have more expereince with PSM, and not so much with CSM, but with a google search, here my 2 cents’ worth: I think both are good and widely accepted certifications. In terms of content, the two are largely similar, as both are based on the Scrum Guide. However, PSM is generally seen as slightly more in-depth and rigorous in its testing of Scrum theory, with perhaps a more challenging exam. On the other hand, CSM also follows the Scrum Guide, and places more emphasis on interactive learning and facilitation through instructor-led discussions. In short it seems PSM more in depth on Scrum theory, while CMS focusses on interactive learning and instructor-led discussions. 

Hi,

I'm one of very few individuals to have achieved trainer status with both organizations: Scrum.org and Scrum Alliance. So, I'll provide my thoughts to your question.

First, it's interesting to note that both organizations were founded by Ken Schwaber, co-author of Scrum. Scrum Alliance in 2002 and Scrum.org around 2009. Ken left Scrum Alliance for reasons related to professional vision, et cetera.

(I also left Scrum Alliance in 2018 for professional / philosophical reasons.)

Second: Both organizations acknowledge the official definition of Scrum: The Scrum Guide™. This is important because there are other organizations that offer "Scrum" certifications but they peddle their own interpretations of Scrum — some hardly resemble actual Scrum.

Hmm...

I tried to post a table. I'll try again as an image: