In the early days of a SaaS company, there are 5 key metrics that matter the most.
These metrics include ARR (Annual Recurring Revenue), ARR Growth Rate, Burn Rate, True Customer Happiness (measured by NPS), and Net Revenue Retention / Churn.
Other metrics like CAC (Customer Acquisition Cost), CLTV (Customer Lifetime Value), and Burn Multiple are important, but not as critical in the early stages.
The primary focus should be on achieving product-market fit, ensuring customer satisfaction, and managing cash burn effectively.