Answer.

Creating user prototypes is an important part of a business analyst's work that visually demonstrates how the system or interface will function. Prototypes are used to gather feedback, clarify requirements, and reduce the risks of misunderstandings between the client, developers, and users. Prototypes can vary in detail from simple sketches (low-fidelity) to interactive mockups (high-fidelity).

Key features:

• Low-fidelity prototypes: quick and simple sketches, usually on paper or in basic editors, do not detail the design but capture the structure and key usage scenarios.

• High-fidelity prototypes: interactive and visually close to the actual product mockups with detailed drawings of elements, development of the color scheme, often with partial simulation of system behavior.

• Value of prototyping: identifying shortcomings and controversial points at an early stage, saving resources on revisions, improving requirement alignment among all project participants.

Trick questions.

Can we always rely only on low-fidelity prototypes?

No. In case of a complex or visually intricate interface, important interaction details might be missed without high-fidelity prototypes, increasing the risk of misunderstanding and rework.

Is it mandatory for a business analyst to master professional tools for high-fidelity prototyping?

Not necessarily, but basic familiarization with tools (e.g., Figma, Axure) greatly speeds up communication with clients and the team.

Are prototypes a complete replacement for technical documentation?

No. The prototype is a supplementary tool. Detailed specifications (list of requirements, API descriptions, business rules) remain mandatory.

Common mistakes and anti-patterns

• The business analyst does not show prototypes to users and only coordinates with the client.
• Using a "pretty" prototype instead of developing logical scenarios.
• Perfectionism when drawing the prototype at the earliest stage, which delays the approval process.

Real-life examples

Negative case: In the project, only a text description of the interface was made, and the prototype was not agreed upon with end users. Pros: the analysis was quick. Cons: the interface turned out to be inconvenient, and the design had to be redone at the testing stage.

Positive case: In another project, the business analyst first prepared a paper prototype, gathered feedback, then created an interactive mockup and conducted a demonstration with users. Pros: the system was convenient, and the number of changes after release was minimal. Cons: it took more time at the early stage, but the project saved resources during implementation.