SaaS Metrics 2.0
David Skok · 2013
"A definitive dashboard of SaaS unit economics (CAC, LTV, churn, magic number) for building and funding SaaS."
Subscription software businesses (SaaS) don't get paid all at once like a normal sale — they get a little bit of revenue every month for as long as the customer stays. That changes what actually matters to track. Skok's essay lays out the core numbers every SaaS founder and investor should watch: how much it costs to acquire a customer (CAC), how much that customer is worth over their whole lifetime (LTV), how fast customers cancel (churn), and how efficiently each new dollar of sales/marketing spend turns into new recurring revenue (the 'magic number'). Get the relationship between these numbers wrong, and a SaaS company can look like it's growing while actually burning cash faster than it can ever earn it back.
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