Oscar Vayreda - Fundamental metrics: the numbers that make growth visible

In the world of startups and SMEs, making decisions based on data is not optional, it is necessary. Without clear and actionable metrics, it is impossible to know whether what you are doing really works, whether you are growing profitably, or whether you are simply spending resources without direction.

This series of articles has a clear goal: to help you master the fundamental metrics that every CEO or founder should keep under control if they want to build a sustainable, scalable business that is ready to attract investment.

Why are these metrics so important?

Because they are the common language between founders, investors, and teams. They allow you to:

Validate whether your business model is profitable.
Detect bottlenecks in growth.
Prioritize marketing and product investments.
Make decisions with confidence, not intuition.

Calculate whether your business is really growing

Is your business really growing?

Understanding a specific metric is important. But no metric, on its own, tells you whether your business is moving forward or not. The Traction Calculator lets you put all your metrics into context and make decisions with judgment.

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Series: Fundamental Metrics for Startups and SMEs

Your business is already speaking through its data: learn how to interpret the key metrics that reveal whether you are growing with direction, building a profitable model, or simply moving forward blindly.

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Series: Fundamental Metrics for Startups and SMEs

Fundamental metrics: the numbers that make growth visible

Your business is already speaking through its numbers: learn the fundamental metrics that reveal whether you are growing with direction, wasting resources, or building something truly scalable.

Customer Acquisition Cost (CAC): the true cost behind growth

Discover how much it really costs to acquire a customer and whether your growth is sustainable, scalable, and profitable.

Customer LifeTime Value (LTV o CLTV): what every customer is really worth

It’s not about selling more, but about knowing how much each customer is really worth: understand how LTV helps you make better decisions about growth, investment, and profitability.

LTV vs CAC: the vital balance for growth

Growth can lie: learn how the LTV/CAC balance reveals whether your startup is scaling profitably, recovering acquisition costs fast enough, and investing in marketing without burning value.

Churn: the customers you lose before you grow

Every lost customer is a warning signal: understand how churn reveals whether your product delivers real value, how much growth you are losing, and what you can do before acquisition turns into a leaking bucket.

Customer Referrals: when word of mouth becomes growth

Word of mouth has a speed limit: learn how the viral coefficient and referral cycle determine whether recommendations become a real growth engine or just a slow trickle of new customers.

Burn Rate: your bussiness’s financial countdown

Your bank account is a countdown: learn how burn rate reveals how long your startup can survive, when you need to raise money, and how much runway you really have before the next milestone.