According to Install and configure workflow for SharePoint Server, each server in the SharePoint Server farm must have the Workflow Manager Client installed. I can easily verify Workflow manager is installed on SP2016 App server (with Get-wffarm).
My first question is how to verify “Webflow Manager client” are installed on all other servers beside checking “installed program” and “web platform installer”? I am not comfortable for the indirect checking methods. Can I run some command or query a web service URL to verify?
My second question is what is the usage of client? I cannot find any article discuss the usage. I tested our SP2013 workflows are running fine even I am sure it is not yet installed on Search server.