Comparison
Microsoft resources
Approvals: What is Approvals? - Microsoft Support
Power Automate: Microsoft Forms in Power Automate - Power Automate | Microsoft Learn
WARN: The future licensing of power-automate / flows on campus is not fully solidified. Our Microsoft License is not UW-specific, and covers multiple Canadian Universities (Greg Smith will be exploring this more ~2023-nov-21).
Decisions.com
Steve Weber: The tool is powerful!, However, the training necessary to learn the basics is steep. If you only have a few hours in a day to do training it might take two months. Because I neared a project deadline I had to abandon Decisions and (grab Django). Personally I think Decisions is neat but too tricky for none developers. Being a programmer I just want to code. That said, low code/no code solutions like Microsoft Forms feel like a good direction to empower less techinal staff.