The question that defined Open Process Automation for most of its first decade was "will this work?"
That question has been answered.
Multi-vendor systems built to O-PAS conformance have operated in production-adjacent deployments. Applications written against the standard's information model have proven portable across distributed control nodes from different suppliers. Performance has been validated against the determinism and reliability requirements of industrial process control.
The technical hypothesis underlying OPA — that an open architecture can deliver the operational characteristics of a traditional DCS while removing its lifecycle constraints — has moved from claim to evidence.
The questions that matter in 2026 are different. They are not technical questions. They are organizational, commercial, and strategic. Which operators move first. Which integrators position correctly. Which suppliers commit to genuine conformance rather than partial openness.
The architecture is no longer the variable. The variable is adoption.
If your organization is still treating OPA as a technology question rather than an organizational one, you're working from information that's three years stale.
CSI's State of OPA 2026 report walks through where the standard, the suppliers, the integrators, and the economics actually stand. It is the most complete current picture of where adoption — not the technology — now sits.