What is the best SAFe certification for a Scrum Master?

The recommended SAFe certification for a Scrum Master is the SAFe Scrum Master. Alternatively, consider the Professional Scrum Master (PSM-I) from Scrum.org, which is well-regarded. Alternatively, many find the SAFe® Leading SAFe 6.0 or SAFe® 6 Agilist options worthwhile. Other options include the Agile Fundamentals (ICP) from ICAgile and the Certified Scrum Master (CSM) from the Scrum Alliance.

If you are interested in technical agility, the Professional DevOps Foundation certification is useful. Additionally, methodologies like Kanban are viable alternatives.