A collection of best practices that product managers can consider to manage products better.
Peak-End Rule
Users' recollection of their experience is heavily influenced by the most intense point and the end of the experience, which should be considered when evaluating feedback.
Law of Validation
Assumptions must be validated with real user data to avoid building the wrong product.
Law of Divergence and Convergence
Effective discovery involves exploring a wide range of ideas (divergence) and then selecting the most promising ones (convergence).
Law of Technical Debt
Unaddressed technical debt accumulates interest, making future changes more costly and time-consuming.
Law of Customer Retention
Retaining existing customers is more cost-effective than acquiring new ones, so operations should focus on customer satisfaction and loyalty.
Law of Feedback Loops
Short feedback loops enable faster learning and improvement in product operations.
Brooks's Law
Adding more resources to a late project will delay it further due to increased communication overhead.
Iron Triangle Law
In product delivery, you can fix two of the three constraints—scope, time, and cost—but the third must be flexible.
Law of Early Testing
Defects found early in the development process are cheaper to fix than those found later.