How to build a data-driven marketing strategy

How do you build a marketing strategy that your CEO and CFO can actually get behind, without turning marketing into a spreadsheet hobby?In this episode of Your CMO Mentor, we sits down with Jamie Jamie Domenici, CMO of Klaviyo, to unpack how she uses data to set clear goals, run smarter experiments, and make big strategic calls (even when the “safe” data path says otherwise).You’ll hear Jamie’s practical framework for strategy vs tactics, how she thinks about always-on momentum vs big launch moments, and the leadership rhythms she uses to keep a fast-moving team aligned.What you’ll learn:- Where to start if you’re early in your marketing career- Why strategy should make your CFO happy - How to avoid doing “too many things” with not enough impact- What to do when your gut disagrees with the data- How to build a culture where experiments don’t feel like career risk00:00 Data → action plan06:33 Skills to build first07:15 Traits of a top marketer10:42 Dream mentor + lesson14:21 Advice to younger self15:51 Urgency vs long game18:58 Strategy vs tactics23:54 Where to start strategy26:46 Where strategy goes wrong28:54 Always-on vs big launches32:56 What data matters37:35 Gut vs data44:13 How often to revisit strategy47:28 Keeping teams aligned50:23 Messy data scenario55:37 Culture: evidence + experiments