Book · Around 440 pages

Lean Analytics: Use Data to Build a Better Startup Faster

Alistair Croll and Benjamin Yoskovitz · O'Reilly Media Paid Intermediate

The One Metric That Matters chapter is still the canonical treatment of picking a single focusing number, and crucially it ties that choice to your business model and stage, which is the real question hiding behind free plus paid. It maps the right metric to model type (SaaS, marketplace, e-commerce and more) with public benchmarks, so you are not guessing what good looks like. Treat it as the reference you return to when your one metric needs to change as you move stages.

• The One Metric That Matters means picking a single number to rally around at each stage and ignoring the rest until it is solved, which forces a decision when free and paid both want attention.
• Your right metric depends on your business model, so a freemium SaaS founder and a marketplace founder should not chase the same North Star.
• It separates vanity metrics from real ones, useful when free-user counts look impressive but do not predict paid value.