Growth Metrics & Strategy Glossary
Key metrics and frameworks for measuring and driving product growth — churn, activation, viral loops, NRR, and product-led growth strategies.
AARRR Framework (Pirate Metrics)
A growth framework that organizes the customer lifecycle into five stages: Acquisition, Activation, Retention, Referral, and Revenue, providing a structured approach to identifying and fixing growth bottlenecks.
Activation Rate
The percentage of new signups who complete a key action (the 'aha moment') that correlates with long-term retention and product value realization.
Annual Recurring Revenue (ARR)
The annualized value of recurring subscription revenue, calculated as MRR multiplied by 12, serving as the standard valuation metric for SaaS companies and the basis for growth rate benchmarking.
Average Revenue Per User (ARPU)
The mean revenue generated per active user or account over a given period, calculated by dividing total revenue by the number of users, used to track monetization efficiency.
Burn Rate
The rate at which a company spends its cash reserves in excess of revenue, typically measured monthly, determining how long the company can operate before needing additional funding or reaching profitability.
Churn
The rate at which customers stop using or paying for a product over a given period, typically measured as monthly or annual churn percentage.
Cohort Analysis
A method of analyzing user behavior by grouping users based on a shared characteristic (typically signup date) and tracking their metrics over time, revealing trends hidden in aggregate data.
Competitive Moat
A sustainable competitive advantage that protects a business from competitors, creating durable barriers that are difficult or costly to replicate, such as network effects, proprietary data, or switching costs.
Crossing the Chasm
The critical and difficult transition a technology product must make from early adopter customers to the pragmatic mainstream majority, as described in Geoffrey Moore's influential framework.
Customer Acquisition Cost (CAC)
The total cost of acquiring a new customer, calculated by dividing all sales and marketing spend by the number of new customers acquired in a given period.
Customer Segmentation
The practice of dividing customers into distinct groups based on shared characteristics like behavior, demographics, needs, or value, enabling targeted strategies for acquisition, engagement, and retention.
Day-1 Retention
The percentage of new users who return to the product the day after their first visit, serving as the earliest indicator of whether initial experience delivered enough value to warrant a second session.
Engagement Score
A composite metric that combines multiple user activity signals into a single score representing overall engagement health, used for segmentation, churn prediction, and identifying expansion opportunities.
Expansion Revenue
Additional revenue generated from existing customers through upsells, cross-sells, add-ons, and increased usage, representing growth from the installed base without new customer acquisition.
Feature Adoption
The measurement of how widely and deeply users engage with specific product features, tracking discovery, trial, usage frequency, and sustained engagement to evaluate feature success and guide product development.
Flywheel Effect
A self-reinforcing business dynamic where each improvement in one area accelerates improvements in others, creating compounding momentum that becomes increasingly difficult for competitors to replicate.
Freemium
A pricing model where a basic version of the product is offered for free while premium features, capacity, or support require a paid subscription, using the free tier as an acquisition and activation engine.
Gross Margin
The percentage of revenue remaining after subtracting the direct costs of delivering the product (hosting, infrastructure, support, AI inference costs), measuring fundamental business model efficiency.
Growth Accounting
A framework that decomposes net user or revenue growth into its constituent parts (new, resurrected, retained, and churned), revealing the underlying dynamics that drive the top-line number.
Growth Loop
A self-reinforcing cycle where each cohort of users generates inputs (data, content, referrals) that attract the next cohort, creating compounding growth.
Land and Expand
A go-to-market strategy where you acquire customers with a small initial deal (land) and then grow the account over time through additional seats, features, or departments (expand).
Lifetime Value (LTV)
The total revenue a business can expect from a single customer account over the entire duration of their relationship, accounting for recurring payments, expansion, and churn probability.
Logo Churn
The percentage of customers (accounts or logos) lost in a given period, measuring customer count attrition regardless of revenue impact, where each account counts equally regardless of size.
Magic Number
A SaaS sales efficiency metric calculated by dividing the change in quarterly recurring revenue by the previous quarter's sales and marketing spend, indicating whether growth investments are paying off.
Market Penetration
The percentage of your total addressable market that you have captured as customers, measuring how much of the available opportunity you have converted and how much growth potential remains.
Monthly Recurring Revenue (MRR)
The predictable, normalized monthly revenue from all active subscriptions, excluding one-time fees, providing the baseline metric for subscription business health and growth trajectory.
Negative Churn
A state where expansion revenue from existing customers exceeds the revenue lost from cancellations and downgrades, meaning the existing customer base grows in value even without new acquisitions.
Net Promoter Score (NPS)
A customer loyalty metric based on the question 'How likely are you to recommend this product to a colleague?' scored from 0-10, with results categorized into Promoters (9-10), Passives (7-8), and Detractors (0-6).
Net Revenue Retention (NRR)
The percentage of recurring revenue retained from existing customers over a period, including expansion, contraction, and churn — where 100%+ indicates growth without new customers.
Network Effects
A dynamic where a product becomes more valuable to each user as more users adopt it, creating a self-reinforcing growth cycle and a structural competitive advantage that strengthens with scale.
North Star Metric
The single metric that best captures the core value your product delivers to customers, serving as the primary alignment tool for the entire company's growth efforts.
Payback Period
The time required for revenue from a customer to recoup the cost of acquiring them, typically measured in months, indicating how quickly acquisition investments generate positive returns.
Power Users
The most engaged segment of your user base who use the product with the highest frequency, depth, and breadth, often accounting for a disproportionate share of engagement, revenue, and advocacy.
Pricing Strategy
The methodology for setting and optimizing product prices to balance customer acquisition, revenue maximization, and competitive positioning, encompassing pricing model, packaging, and ongoing optimization.
Product-Led Growth (PLG)
A go-to-market strategy where the product itself drives acquisition, activation, and expansion through self-serve experiences rather than sales-led motions.
Quick Ratio (SaaS)
The ratio of revenue added (new + expansion + reactivation) to revenue lost (churn + contraction) in a given period, measuring the efficiency of growth by quantifying how much you add for every dollar lost.
Reactivation
The process of re-engaging dormant or churned users and bringing them back to active product usage, typically through targeted outreach that addresses their original reason for leaving.
Referral Program
A structured system that incentivizes existing users to invite new users by offering rewards to the referrer, the referee, or both, systematically amplifying word-of-mouth acquisition.
Retention Curve
A graph showing the percentage of users who remain active over time after their first use, revealing whether a product achieves long-term engagement or suffers from steady user attrition.
Revenue Churn
The percentage of recurring revenue lost from existing customers through cancellations and downgrades in a given period, measuring the direct financial impact of customer attrition.
Reverse Trial
A pricing model where new users get full access to all premium features for a limited time, then transition to a free tier after the trial ends, combining freemium's low barrier with trial's full-value exposure.
Rule of 40
A benchmark for SaaS companies stating that the sum of revenue growth rate and profit margin should exceed 40%, balancing the trade-off between growth and profitability.
Runway
The number of months a company can continue operating at its current burn rate before running out of cash, calculated by dividing remaining cash by monthly net burn rate.
Series Funding
Sequential rounds of venture capital investment (Seed, Series A, B, C, and beyond) that fund startup growth in exchange for equity, with each round typically corresponding to specific milestones and company stages.
Stickiness Ratio
The ratio of daily active users to monthly active users (DAU/MAU), measuring how frequently the average monthly user engages with the product, where higher ratios indicate stronger habit formation.
Time to Value (TTV)
The elapsed time between a user's first interaction with the product and the moment they experience its core value proposition, where shorter TTV correlates with higher activation and retention rates.
Total Addressable Market (TAM)
The total revenue opportunity available if a product achieved 100% market share, representing the maximum potential size of the market and used to evaluate business opportunity and set growth targets.
Unit Economics
The direct revenues and costs associated with a single unit of your business model (typically a customer), determining whether each additional customer contributes to or detracts from profitability.
Usage-Based Pricing
A pricing model where customers pay based on their actual consumption of the product (API calls, storage, compute, seats), aligning cost with value received and enabling natural expansion revenue.
User Onboarding
The process of guiding new users from signup to their first value experience, designed to reduce time-to-value, establish product habits, and maximize the probability of long-term retention.
Value Metric
The unit of measurement that forms the basis of your pricing, directly aligning what customers pay with what they value, such as seats, API calls, messages sent, or records stored.
Viral Coefficient (K-Factor)
The average number of new users each existing user brings to the product, where a K-factor above 1.0 indicates self-sustaining viral growth.
Willingness to Pay (WTP)
The maximum amount a customer would pay for a product or feature, determined through research methods like surveys and experiments, used to optimize pricing for revenue maximization.
Win-Back Campaign
A targeted marketing effort designed to re-engage and convert churned customers back to active, paying status, using personalized messaging, incentives, and product updates to address their reasons for leaving.