Tracking customer retention is essential; it helps you understand how many users continue to engage with your product over time, which is a key indicator of success.

Retention is the most reliable way to measure product-market fit; it indicates whether users continue to find value in your product.

Retention should be analyzed by looking at cohorts of users over time, assessing how many continue to use your product after signing up.

Retention and upsell are critical metrics that significantly impact revenue multiples; companies with high retention rates tend to have higher valuations.

Retention is the single most important factor for growth; if users don't stay, the business won't succeed.

Retention is crucial for consumer products; if users don't return, you face a 'burned forest' problem where new user acquisition becomes impossible.

Measuring retention is critical; if you don't have a product that retains users, you shouldn't focus on growth yet.

Visualizing retention through stacked cohorts can illustrate the long-term value of customers and the health of your business. High retention businesses can still grow revenue even when no new customers are signed up, as they continuously add layers of revenue over time.

Net revenue retention measures the percentage of recurring revenue from current users, reflecting how well your company retains and expands its user base.