# Revenue Architects > Revenue Architects is the practitioner firm behind Revenue Architecture® and RAOS — the Revenue Architecture Operating System. We help companies and fellow practitioners design and operate revenue as an engineered system across three layers: Revenue Strategy, Revenue Platform, and Revenue Production. The method is human-orchestrated and AI-operated. Revenue Architects sells the architecture and the operation of it — not advice and execution as separate products. Work happens in three modes: Training (learn to run RAOS), Certification (license to practice as a Certified Revenue Architect™), and Engagement (the authors design and help operate a revenue architecture with you). ## Pages - [The Firm](https://revenuearchitects.com/about): Who Revenue Architects is — the authors, the practitioner model, and the philosophy behind Revenue Architecture. - [Services](https://revenuearchitects.com/services): The three ways to put the method to work — Training, Certification, and Engagement. - [Proof](https://revenuearchitects.com/proof): Client outcomes and the firms Revenue Architects has worked with. - [Insights](https://revenuearchitects.com/insights): Articles on revenue architecture, RevOps, go-to-market and sales qualification, financial-advisor growth, and the agentic era. - [Engage](https://revenuearchitects.com/engage): Start a short scoping conversation with the Engagement Agent (RAOS FACT qualification — Fit, Authority, Criteria, Timeline), or talk to a human. ## The method - [Revenue Architecture (RAOS)](https://revenuearchitecture.com): The canonical method site — the Revenue Architecture Operating System, its layers, plays, and operating agents. ## Optional - [Run the Diagnostic](https://revenuearchitecture.com/diagnostic/): Assess your revenue architecture maturity across the three RAOS layers.