This document discusses the limitations of traditional process modeling approaches based on flows and proposes a shift towards constraint-based processes. Constraint-based processes address challenges like scalability, flexibility, and ownership that arise from flows. They capture individual stakeholder constraints that can then be used to infer variable processes. This allows for stepless shifting between workflow, case management, and straight-through processing based on constraint levels. Constraint-based processes also enable modularity, embedded compliance, and new business models.