# Vision, Stakeholders and Context

> Project vision, system idea, business goals, stakeholders and their concerns, system scope, system context.

## Concepts

- [Business Model Canvas](https://arc.fuet.ch/concepts/vision-stakeholders/business-model-canvas.md): The Business Model Canvas describes a business on one page in nine blocks: who it serves, what it offers, how it delivers, what it costs and what it earns. Architects read it to understand the business behind a system.
- [Context View](https://arc.fuet.ch/concepts/vision-stakeholders/context-view.md): A context view shows the system as a black box and the world around it. It focuses on what data the system exchanges with its environment, so everyone can see where the system starts and ends.
- [Context View Antipattern: Forgetting Bidirectional Data Flows](https://arc.fuet.ch/concepts/vision-stakeholders/context-view-antipattern-forgetting-bidirectional-data-flows.md): A context diagram goes wrong when it draws one-way arrows for exchanges that run both ways. The missing direction hides what data the system must send, receive and handle, so interfaces end up under-specified.
- [Refining Complex Context Views](https://arc.fuet.ch/concepts/vision-stakeholders/refining-complex-context-views.md): A complex system context stays readable when the top-level diagram remains a simple overview. Many external systems are grouped by clear criteria, and the detail of each interface, business and technical, is described separately.
- [Stakeholder](https://arc.fuet.ch/concepts/vision-stakeholders/stakeholder.md): A stakeholder is a person, team, organization, or class of such parties with an interest in a system being built. Architects must balance their different needs and make sure each class is represented.
- [Stakeholder Identification](https://arc.fuet.ch/concepts/vision-stakeholders/stakeholder-identification.md): Stakeholder identification means finding the people, teams and organizations with an interest in a system. It comes first, before you rank stakeholders or plan how to talk to them.
- [Stakeholder Power Grid](https://arc.fuet.ch/concepts/vision-stakeholders/stakeholder-power-grid.md): The stakeholder power grid sorts stakeholders by their power over a project and their interest in it. The position on the grid tells you how closely to engage each group.
- [System Idea](https://arc.fuet.ch/concepts/vision-stakeholders/system-idea.md): A system idea is an early, high-level answer to how a system will be built. In arc42, the solution strategy section is its closest counterpart. It reuses proven patterns and is driven by quality goals and constraints.
- [System Idea and Vision Elements](https://arc.fuet.ch/concepts/vision-stakeholders/system-idea-and-vision-elements.md): A system's vision is built from linked parts: a vision statement, the target group, needs and value behind it, and the context. Each part is written with the others in mind, so requirements and context stay consistent.
- [Vision Statement](https://arc.fuet.ch/concepts/vision-stakeholders/vision-statement.md): A vision statement is a short, inspiring statement of the shared goal behind a product. It names the target customers, the value they get, and the few features that make the product stand out.