Nexus and Approval workflow
Workflow and approvals solves a different problem.
Approval workflow routes decisions. Nexus focuses on the quality of the decision being routed.
Workflow
Send the request to the right approver in the right sequence.
Nexus
Make the issue, economic consequence, interaction and repair explicit.
Together
Use workflow to move the decision and Nexus to improve what the decision means.
Nexus is not a replacement for the systems that create, route or manage commercial documents. It is the decision-control layer for material commitments before they become binding.