The former would be useful if you want to satisfy ATS's or other "dumb" filters for a job application. The latter demonstrates you know more than just Scrum and you have experience to back it up, but because it is missing the key words "Scrum Master" it may not carry the same weight from an initial application perspective.
This is why PMI chose to name the first of the new DA certifications "DA Lean Scrum Master". Marketing trumped the pleas of long-time DA advocates in this regard...
Kiron Saving Changes...
Jared PadgettVerizon MediaVentura, Ca, United States
I think there is a benefit to having both. PMI-ACP is broader, and more experience-based. CSM is scrum-specific, so if your organization is doing Scrum, it will be useful. The Scrum Masters in my organization have the CSM, but I saw on some recent job posts the PMI-ACP is starting to show up on the job requirements. I decided to get both for this reason. Saving Changes...
There's a benefit to both but if you already have the PMI-ACP I don't think you need to be in a rush to get the CSM.
The CSM works best for those new to agile and don't have the experience to sit for the PMI-ACP. It's considered an entry level certification as you don't have to have experience. The more experienced certification from Scrum Alliance on this is the A-CSM (Advanced CSM) and higher but I've never seen those in a job listing as a requirement.
If you have a CSM, it's absolutely worth getting a PMI-ACP and I plan to do that (I have a CSM and PMP) when I have the experience to sit for the exam. Hope this helps Saving Changes...