The MOSY Method
Model the right thing, then ship it with AI. Organized in three phases: Align, Design, Build.
One method, three phases
Each phase is a workshop, and each runs on its own instruments: Align and Design use my free visual tools, Build uses AI agents.
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Align
Get product and engineering on the same page about the right system to build, with my discovery and alignment tools.
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Design
Turn that alignment into an architecture using the MOSY Framework, my visual modeling notation.
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Build
Ship it with AI agents that build from the model, with guardrails that keep them on track.
Why modeling matters more with AI
AI can write code faster than ever, so the bottleneck is no longer typing. It is deciding what to build. The model is the input your AI agents work from: a good model means good code, a vague one just lets AI scale the wrong thing fast. I keep those agents ready to use in StrategyRadar, the free library of the method.
MOSY gives you that model through a simple yet powerful notation that represents complex systems as connected flows:
Functional Flows show what the system does from a business perspective Data Flows reveal how information moves through your system Technical Flows map the implementation details and architecture
This multi-layered approach means everyone, from business stakeholders to developers to AI agents, works from the same shared understanding. No more miscommunication, no more hidden assumptions, no more surprises during implementation.
- Instant visual understanding
- Collaborative design sessions
- Living documentation
- Clear implementation roadmap
Benefits That Transform Your Development Process
The MOSY Method isn't just another modeling tool, it's a complete approach to system design that delivers real value from day one.
Visual Modeling
Represent complex systems as connected flows everyone can read.
Business-IT Alignment
One shared language between business stakeholders and engineering.
Identify Gaps
Spot missing components, dependencies and risks before you build.
AI Development Bridge
A model your AI agents work from, so they build the right thing.
The MOSY Framework: the notation at the heart of Design
High-Level System View
Start with the big picture. Map out actors, flows, and key objectives to understand what your system needs to achieve from a business perspective.
Flow Diagrams
Dive into the details. Model actions, entities, metrics, and technical components using my visual notation that everyone can understand.
Step-by-Step Process
Follow my proven 4-step process: from high-level view to actions and entities, metrics, and finally technical components and APIs.
Practical Handbook
Get the complete guide in a 44-page landscape format handbook packed with diagrams and real-world examples.
The toolbox, by phase
Each phase runs on its own free instruments. Align and Design use my visual tools; Build uses AI agents.
Align
Get business and tech on the same page.
- Stakeholder Interview
- Delivery Function Map
- Architecture Vision
- Principles & Guidelines
- Technology Adoption Table
- Architecture Community
- AI Adoption Strategy
Design
Turn alignment into an architecture.
- MOSY Framework (modeling)
- Architecture Decision Records
Build
Ship it with AI agents.
- AI agents (StrategyRadar)
From Startup MVPs to Enterprise Systems
The MOSY Method has been successfully applied across diverse projects and organizations:
- Startups use it to rapidly prototype and validate their system designs
- Scale-ups leverage it to manage growing complexity without losing agility
- Enterprises adopt it to align multiple teams and modernize legacy systems
- Consultancies apply it to quickly understand and improve client architectures
Whether you're building from scratch or evolving existing systems, MOSY provides the clarity and structure you need to succeed.
Put the method to work
Learn it hands-on in a workshop, or read the Handbook first and model on your own.