Most development tools describe your behavior. Inner Architecture describes the structure underneath it: five forces that shape what you take on, what you draw on, what you can do, what you produce and what you go after. Everyone has all five. What differs is how they are distributed: which ones lead, which ones are underpowered, and how they push against each other.
Control / Authority: what you must do. Obligation, standards and structure. The demands placed on you, and the ones you place on yourself.
Insight / Support: what sustains you. Learning, reflection, mentors and the resources you rely on. The force that replenishes you.
Power / Identity: what you are. Your sense of self, your skills and capabilities, and where you stand among peers.
Expression / Output: what you do. Communication, creation and delivery, and the desire that turns intention into action.
Ambition / Outcome: what you pursue. Goals, money and results. What you take responsibility for acquiring and managing.
[How they interact]
The Forces are not five separate traits. Each one fuels another and moderates another. A strong force can feed the next one or crowd it out. Insight that never yields to Expression turns into deliberation without action. Authority that never meets enough Identity turns into pressure without footing.
This is why no single force is "the stress one". What strains you depends on your configuration. For one owner, the strain is the weight of obligation. For another, it is the moment reflection has to become a decision.
Underneath the Forces sits a further layer: how each one operates in you specifically. That is where the work gets precise, and it is what the written report and the coaching sessions address.
[Where this comes from]
The Five Forces are drawn from BaZi, a classical Chinese system for reading a person's constitution from the time of their birth. It is not astrology in the horoscope sense, and it has no real Western equivalent. The closer comparison is an acupuncturist reading your constitution before treating you: it starts from fixed inputs rather than from how you describe yourself.
You don't need to accept the classical cosmology for the map to be useful. Judge it the way you would judge any instrument: by whether what it shows you holds up against your own experience. Skepticism is welcome. It is part of the process.
And no, these are not Porter's Five Forces. His shape the market a business competes in. These shape the person doing the work.