What is the difference between feasibility study and requirements analysis?

Question

Accepted Answer

**Feasibility** — can we do it? **Requirements** — what to build?

**Feasibility Study:**
- Determines if project is viable.
- Technical feasibility.
- Economic feasibility.
- Operational feasibility.
- Done before requirements.

```
Feasibility Questions:
- Do we have the technology?
- Can we afford it?
- Will users adopt it?
- Is it legal/compliant?
```

**Requirements Analysis:**
- Determines what to build.
- Gathers detailed requirements.
- Documents functionality.
- Done after feasibility.

```
Requirements Questions:
- What features are needed?
- How should it work?
- What are the business rules?
- Who are the users?
```

**Key differences:**
- **Feasibility** — can we?
- **Requirements** — what to build?
- **Feasibility** — before.
- **Requirements** — after.

Systems Analyst: What is the difference between feasibility study and requirements analysis?