Hi.
I don't know ASO, so I can't tell you anything about functionality.
But you should also consider the product roadmap before deciding on any one product.
CA has bought Automic, and CA has other products that have functional overlaps with Automic (ASO may be one of them). At least some of the Automic dediders have publicly stated at "official" Automic events that Automic is the way of the future with CA's automation business. This may (or may not) have implications for the product life cycle of competing in-house products.
So you may want to inquire with someone like a Sales Rep or Key Accounter what the long-term support plan from CA is before settling on any product.
Out of curiosity: Judging by your forum designation, do you work for CA? Then you should have better access to product roadmaps than most of us?
Best regards,
Carsten
edit: it may also be noteworthy that www.ca.com/aso, which is given in some whitepaper I googled, now appears to redirect to "CA API Management", making it look like ASO is a discontinued product. But again, if you work for CA, maybe you can get more insights into this?
edit (2): If you do look up Service Orchestration on ca.com, you'll end up here, which lists "Automic Service Orchestration". This has a video which appears to show AWA, and a whitepaper also only listing Automic products. This confirms my hunch that AWA may have fully replaced ASO. Also, it seems the ASO community has not had a post since 02/2017, and the product blog ends in 2015, so there's that. I would not be surprised if you couldn't even buy ASO if you wanted to.