KPIs – Start with Questions: A Complete Guide to Setting KPIs for Marketers

Running a business without KPIs is like driving a car without a speedometer or oil gauge. In 2025’s era of AI dashboards and real-time data visualization, the ability to set KPIs correctly is one of the most essential competencies a marketer can have.

What Is a KPI?

A KPI (Key Performance Indicator) is the 2–3 most critical metrics — out of all the measurements available — that determine business success or failure. If revenue is the company-wide KPI, then the digital marketing team’s KPIs become downstream metrics that directly contribute to revenue: conversion rate, number of new leads, ad ROAS.

Why KPIs matter: they enable data-driven decision-making instead of gut instinct. Decisions made without KPIs make it nearly impossible to understand what went wrong after the fact.

Start Setting KPIs with Questions

Good KPIs come from good questions. Use the list below to derive KPIs appropriate for your business:

Sales / Revenue

• How many new customers are we acquiring each month?
• What is our Customer Acquisition Cost (CAC)? Is it reasonable compared to Customer Lifetime Value (LTV)?
• Does revenue come from new buyers or repeat buyers?
• What is the revenue split by device (mobile/desktop)?

Digital Marketing

• What are our main traffic acquisition channels? (Search / Social / Direct / Email)
• What is the landing page conversion rate? How does it compare to industry average?
• How are email open rates and click rates trending?
• What is our ad ROAS (Return on Ad Spend)?

Customer Behavior

• Which pages have high bounce rates? What are the causes?
• How many visits does a customer average before making a purchase?
• At which stage does the most cart abandonment occur?

KPIs in the 2025 AI Era: Adding Predictive Metrics

Traditional KPIs measured the past and present. AI predictive analytics brings the future into KPIs. Use GA4’s predictive metrics, CRM’s AI lead scoring, and CDP churn prediction to act proactively.

• Purchase probability prediction: GA4 automatically calculates the likelihood of purchase for each visitor
• Churn prediction: Run proactive retention campaigns for customers with high churn probability
• LTV prediction: Identify high-long-term-value customer segments early and give them dedicated attention

KPIs are not set once and forgotten. Continuously refine them through data analysis, and as your business grows, evolve your KPIs alongside it.