What should you test before building a service?
Choose a user, a task, and the feedback to observe before deciding what to build.
Choose one user and one question to answer
Write who needs to do what, and in which situation. Choose a reviewer and the decision their feedback should support before preparing screens or a prototype.
Choose a test for the question you need to answer
People say it sounds useful, but the use case is vague
- First action
- Ask a potential user how they last completed the task and what was difficult
- What to check
- You can describe a real user, situation, and problem
The feature list grows without a clear first release
- First action
- Choose one user and one complete interaction
- What to check
- The first test is separate from later features
You cannot judge whether the screens work well
- First action
- Ask someone to complete a task and note where they stop or ask questions
- What to check
- You know what to change and what to test next
Example: test a handoff in VisaFlow
An applicant submits, an administrator reviews, and a company approves. The question is whether each role understands what to do next.

Actions to request
- An applicant creates a sample application
- An administrator reviews the content
- A company reviewer checks and approves it
What to observe
- Where the reviewer stops to find the next action
- Fields whose meaning needs explaining
- Whether the handoff to the next role is clear
An example request for the reviewer
Please pass this sample application to the next person. If you get stuck, tell us where you became unsure.
Choose the smallest format that answers your question
Sketches and explanatory material
You need to know whether the use case and information make sense
Try first: Show a screen and ask the reviewer to explain what they think it does
Interactive prototype
You need to know whether someone can complete one task across screens
Try first: Request one task and note hesitation and completion
Small live service (MVP)
You need to test real value and sustainable operation
Try first: Provide appropriate authentication, storage, and security; review usage and support needs
Ask one person to try one task today
- Write down the first user and one task
- Ask about their current method and choose what the prototype changes
- Let them try it and record hesitation and feedback
If people hesitate, revise the screen or wording and test again. Evaluate value in real use after the required security and operations are ready.
If you still need help choosing
Use the assessment or an initial consultation if tool choice or scope is still unclear after trying these steps.
Start the three-minute prototype assessmentThe assessment and initial consultation are free. Any free prototype scope is agreed during consultation; substantial prototypes and full development are quoted before work starts.
Explore the details
Prepared by TechGuide LLC, the team behind Ready-mock and its public workflow mocks. About the team