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**People and Roles
Collect Data
Capture Context Define a Feature Prioritize Build → Measure

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How do you know if your feature was successful?

When you were deciding what feature to build, you went through a process of identifying the problem, defining the outcome, designing a solution, then building it. During this process, you need to think about what good looks like and answer the question, "How do I know if we achieved our goals?"

It's good to identify the success criteria for a feature before investing in the build building it.

Measure impact

You can measure the impact with:

1. Metrics,
2. Key Performance Indicators (KPIs), or
3. Other success criteria.

When you defined your Feature Spec, you should have included a hypothesis list the success criteria. Success criteria need to be something measurable or testable. The easiest thing to test is something that can be tracked quantitatively. Though you can use interviews to capture qualitative information.

Here are some possible indicators that you can use:

Business metrics

• MRR - monthly recurring revenue
• Churn - percentage of customers that have canceled or lowered their subscriptions
• LTV - lifetime value
• CAC - customer acquisition cost
• ARPU - annual revenue per user

Product metrics