Track fewer metrics with deeper understanding. The 10 that actually predict business outcomes: Cost Per Acquisition (CPA), Customer Lifetime Value (LTV), Conversion Rate, Return on Ad Spend (ROAS), Email Open Rate and CTR, Organic Search Traffic trend, Lead-to-Customer Rate, Bounce Rate and Time on Page, Net Promoter Score (NPS), and Revenue by Channel. Review weekly and make decisions based on what channels and pages actually drive conversions — not just traffic.